4-2 study guide and intervention angles of triangles

Unformatted text preview: 4-2 Study Guide and Intervention (continued) Angles of Triangles Exterior Angle Theorem At each vertex of a triangle, the angle formed by one side and an extension of the other side is called an exterior angle of the triangle. For each exterior angle of a triangle, the remote interior angles are the interior angles ...

4-2 study guide and intervention angles of triangles. PDF Télécharger [PDF] 74 Study Guide and Word Problems Solutions - Quia 7 4 study guide and intervention trigonometry p Nos 7 4 Study Guide and Intervention Trigonometry Trigonometric Ratios The ratio of the lengths of two sides of a right triangle is called a trigonometric ratio, 7 4 Study Guide and Intervention Trigonometry …

the coordinate plane by an arrow drawn from one point to another Component form: a representa:on of a vector giving its x and y components; eg <3, -4> NAME DATE PERIOD 4-2 Study Guide and Intervention Chapter 4 12 Glencoe Geometry Study Guide and Intervention (continued) Angles of Triangles Exterior Angle Theorem At each vertex of …

4 2 Study Guide And Intervention Angles Of Triangles McGraw-Hill's 10 ACT Practice Tests, Second Edition - Steven W. Dulan 2008-07-01 We want to give you the practice you need on the ACT McGraw-Hill's 10 ACT Practice Tests helps you gauge what the test measures, how it's structured, and how to budget your time in each section. Written by theTranscribed image text: NAME DATE PERIOD 4-1 Study Guide and Intervention Classifying Triangles Classify Triangles by Angles One way to classify a triangle is by the measures of its angles. . If all three of the angles of a triangle are acute angles, then the triangle is an acute triangle. If all three angles of an acute triangle are congruent ...The two main branches of trigonometry are plane trigonometry and spherical geometry. Trigonometry in general deals with the study of the relationships involving the lengths of angl...5. The interior angle and its adjacent exterior angle form a linear pair by definition. 6. The exterior angles are vertical angles and are therefore congruent. 7. If an exterior angle is indicated, the two angles in a triangle that are not adjacent to the exterior angle are called the remote interior angles. Page 1 of 2.5-1 Study Guide and Intervention (continued) Bisectors of Triangles Angle Bisectors An angle bisector divides an angle into two congruent angles. Angle Bisector Theorem If a point is on the bisector of an angle, then it is equidistant from the sides of the angle. Converse of Angle Bisector TheoremTo the StudentThis Study Guide and Intervention and Practice Workbookgives you additional examples and problems for the concept exercises in each lesson.The exercises are designed to aid your study of mathematics by reinforcing important mathematical skills

Section 4-1: Angles of Triangles. Section 4-2: Congruent Triangles. Section 4-3: Proving Triangles Congruent - SSS, SAS. Page 310: ... Section 4-7: Triangles and Coordinate Proof. Page 341: Chapter 4 Study Guide and Review. Page 345: Chapter 4 Practice Test. Page 348: Chapter 4 Preparing for Assessment. Exercise 1. Exercise 2. Exercise 3 ...4-2 Study Guide And Intervention: Angles Of Triangles; Curiosities, Statistics, and Interesting Information: Discovering Angles in Triangles; Identifying … 6. If cot A = 8, find the exact values of the remaining trigonometric functions for the acute angle A. Find the measu of angle e. Round to the nearest degree, if necessary. S 50 Solve each triangle. Round side measures to the nearest tenth and angle measures to the nearest degree. 10. 14 cos Il. Always keep your workbook handy. Along with your textbook, daily homework, and class notes, the completed Study Guide and Intervention Workbook can help you in reviewing for quizzes and tests. To the Teacher. These worksheets are the same ones found in the Chapter Resource Masters for Glencoe Geometry.NAME _ DATE _ PERIOD _ 4-1 Practice Angles of Triangles Find the measure of each numbered angle. 1. 2. Find each measure. 3. m∠1 4. m∠2 5. AI Homework Help. Expert Help. Study Resources. ... 4-1_Study_Guide_and_Intervention (1).pdf. ... In the given triangle DEF angle D is 90 and segment DG is perpendicular to segment EF Part A …The Twelve Triangles quilt block looks good from any angle. Download the free quilt block and learn to make it with the instructions on HowStuffWorks. Advertisement Equilateral? Is...Dec 19, 2013 · The angle formed by these sides is called the vertex angle. The other two angles are called base angles.You can prove a theorem and its converse about isosceles triangles. • If two sides of a triangle are congruent, then the angles opposite those sides are congruent.(Isosceles Triangle Theorem) • If two angles of a triangle are congruent ... ©Glencoe/McGraw-Hill 184 Glencoe Geometry Classify Triangles by Sides You can classify a triangle by the measures of its sides. Equal numbers of hash marks indicate congruent sides. • If all three sides of a triangle are congruent, then the triangle is an equilateral triangle. • If at least two sides of a triangle are congruent, then the triangle is an …

Study Guide and Intervention ... • If two angles of a triangle are congruent, then the sides opposite those angles are congruent. If AB CB, then A C. If A C, then AB CB. A B C Find x. BC BA, so m A m C. Isos. Triangle Theorem 5x 10 4x 5 Substitution x 10 5 Subtract 4x from each side.U.S. stock indexes on Wednesday turned higher, helped by a fall in Treasury yields and a surprise intervention from the Bank of England in the U.K... Indices Commodities Currencies...An exterior angle of a triangle is equal to the sum of the opposite interior angles. Every triangle has six exterior angles (two at each vertex are equal in measure). The exterior angles, taken one at each vertex, always sum up to 360 ° 360\degree 360°. An exterior angle is supplementary to its adjacent triangle interior angle.Corresponding angles are congruent. Step 2 Compare corresponding sides. ... 4 3 22 11 5 7-2 Study Guide and Intervention Similar Polygons Example 1 "9;: # $ 15 9 12 18 X W Z Y 10 6 8 12 Q P S R + & ( ) Example 2 2 1 49 8 5 6 3 ...

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Kindly say, the 4 2 Study Guide And Intervention Angles Of Triangles is universally compatible with any devices to read Euclid—The Creation of Mathematics Benno Artmann 2012-12-06 Euclid presents the essential of mathematics in a manner which has set a high standard for more than 2000 years. This book, an explanation of the Transcribed image text: NAME DATE PERIOD 4-1 Study Guide and Intervention Classifying Triangles Classify Triangles by Angles One way to classify a triangle is by the measures of its angles. . If all three of the angles of a triangle are acute angles, then the triangle is an acute triangle. If all three angles of an acute triangle are congruent ... Nov 3, 2022 · Below is the best information and knowledge about 4-2 skills practice angles of triangles with work compiled and compiled by the Emvaobep.com team, along with other related topics such as: 4-2 practice geometry answers, 4-1 skills practice classifying triangles, lesson 3 skills practice angles of triangles, lesson 3 skills practice angles of triangles answer key, 4-2 skills practice congruent ... Geometry Study Guide and Intervention Angles of Triangles Triangle Angle-Sum Theorem If the measures of two angles of a triangle are known, the measure of the third angle can always be found. Triangle Angle Sum Theorem The sum of the measures of the angles of a triangle is 180. In the figure at the right, m∠A + m∠B + …

Transcribed image text: NAME DATE PERIOD 4-1 Study Guide and Intervention Classifying Triangles Classify Triangles by Angles One way to classify a triangle is by the measures of its angles. . If all three of the angles of a triangle are acute angles, then the triangle is an acute triangle. If all three angles of an acute triangle are congruent ... PDF 4-2 Study Guide And Intervention. 4-2 ©Glencoe/McGraw-Hill 189 Glencoe Geometry Lesson 4-2 Angle Sum Theorem If the measures of two angles of a triangle are known, the measure of the third angle can always be found. Angle Sum The sum of the measures of the angles of a triangle is 180. Theorem In the figure at the right, m/A 1 m/B 1 m/C 5 180. There are things you love to do, and there are things people pay you to do. In the perfect world those are the same thing, but realistically you need to find a balance between how...Violence in the east African country has claimed hundreds of lives and created fears of "mass violence." Burundi has rejected the decision by the African Union (AU) to send in troo...2 4 1 EXAMPLEEXAMPLE Proof Key Concepts Theorem 5-10 If two sides of a triangle are not congruent, then the larger angle lies opposite the longer side. If XZ. XY, then m&Y. m&Z. X Z Y Key Concepts Corollary Corollary to the Triangle Exterior Angle Theorem The measure of an exterior angle of a triangle is greater than the measure of each of its ...4. If any triangle has sides with lengths 3, 4, and 5, then that triangle is a right triangle. 5. If the two acute angles of a right triangle are 45°, then the length of the hypotenuse is √"2 times the length of either leg. 6. In any triangle whose angle measures are 30°, 60°, and 90°, the hypotenuse is √"3 times as long as the shorter ...Do you know how to cut angles on wood? Find out how to cut angles on wood in this article from HowStuffWorks. Advertisement Cutting an angle on wood is commonly referred to as maki...Always keep your workbook handy. Along with your textbook, daily homework, and class notes, the completed Study Guide and Intervention Workbook can help you in reviewing for quizzes and tests. To the Teacher. These worksheets are the same ones found in the Chapter Resource Masters for Glencoe Geometry.Why are suicide rates in men still so high after decades? And what can men and loved ones do to prevent it? If you know a man you suspect is being challenged by suicidal thoughts, ...Study Guide and Intervention PERIOD Proving Triangles Congruent—ASA, AAS ASA Postulate The Angle-Side-Angle (ASA) Postulate lets you show that two triangles are congruent. If two angles and the included side of one triangle are congruent to two angles and ASA Postulate the included side of another triangle, then the triangles are congruent.

Corresponding angles are congruent. Step 2 Compare corresponding sides. ... 4 3 22 11 5 7-2 Study Guide and Intervention Similar Polygons Example 1 "9;: # $ 15 9 12 18 X W Z Y 10 6 8 12 Q P S R + & ( ) Example 2 2 1 49 8 5 6 3 ...

Three angles are 1, 2, and 3. For other angles, use three letters to name them: SRQ, PRT, and SRT. b. Name the sides of 1. RS, RP SR T P Q 1 2 3 Measure each angle and …Find step-by-step solutions and answers to Glencoe Geometry - 9780079039941, as well as thousands of textbooks so you can move forward with confidence.NAME _____ DATE _____ PERIOD _____ Chapter 4 37 Glencoe Precalculus 4-7 Study Guide and Intervention The Law of Sines and the Law of Cosines Solve Oblique Triangles The Law of Sines can be used to solve an oblique triangle when given the measures of two angles and a nonincluded side (AAS), two angles and the included side (ASA), or two …The two main branches of trigonometry are plane trigonometry and spherical geometry. Trigonometry in general deals with the study of the relationships involving the lengths of angl...Trigonometry Study Guide . Ratios in Right Triangles. Hypotenuse: the side opposite the right angle. The hypotenuse, as noted below, is. the longest. The other. sides are. The …Chapter 4 5 Glencoe Precalculus 4-1 Study Guide and Intervention Right Triangle Trigonometry Values of Trigonometric Ratios The side lengths of a right triangle and a reference angle θ can be used to form six trigonometric ratios that define the trigonometric functions known as sine, cosine, and tangent. The cosecant, secant,6-1 Study Guide and Intervention Angles of Polygons Polygon Interior Angles Sum The segments that connect the nonconsecutive vertices of a polygon are called diagonals.Drawing all of the diagonals from one vertex of an n-gon separates the polygon into n – 2 triangles. The sum of the measures of the interior angles of the polygon can …Chapter 4 Resource Masters. Study Guide and Intervention. Properties of Isosceles Triangles. An. isosceles triangle. has two congruent sides. The angle formed by these sides is called the. vertex angle. The other two angles are called.

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The Pythagorean Theorem is the foundation that makes construction, aviation and GPS possible. HowStuffWorks gets to know Pythagoras and his theorem. Advertisement OK, time for a po...A segment, ray, line, or plane that is perpendicular to a segment at its midpoint; Mark angles as 90 degrees, mark congruent sides. PARALLEL LINES. Lines in the same plane that never intersect; Mark the lines with carrots. Then find congruent angles; *Look for alternate interior angles or corresponding angles. MEDIAN.PDF Télécharger [PDF] 74 Study Guide and Word Problems Solutions - Quia 7 4 study guide and intervention trigonometry p Nos 7 4 Study Guide and Intervention Trigonometry Trigonometric Ratios The ratio of the lengths of two sides of a right triangle is called a trigonometric ratio, 7 4 Study Guide and Intervention Trigonometry …5-2 Study Guide And Intervention Medians And Altitudes Of Triangles Hey there, fellow learners! It's Emma here, your dedicated educator, ready to dive into the fascinating world of triangles. Today, we're going to explore the study guide and intervention for medians and altitudes of triangles. Get ready for some mind-bending …Corresponding angles are congruent. Step 2 Compare corresponding sides. ... 4 3 22 11 5 7-2 Study Guide and Intervention Similar Polygons Example 1 "9;: # $ 15 9 12 18 X W Z Y 10 6 8 12 Q P S R + & ( ) Example 2 2 1 49 8 5 6 3 ...PDF Télécharger [PDF] Word Problem Practice Right Triangle Trigonometry - School District 4 1 study guide and intervention right triangle trigonometry answers Chapter 4 5 Glencoe Precalculus 4 1 Study Guide and Intervention Right Triangle Trigonometry Values of Trigonometric Ratios The side lengths of a right triangle and a reference angle … PDF 4-2 Study Guide And Intervention. 4-2 ©Glencoe/McGraw-Hill 189 Glencoe Geometry Lesson 4-2 Angle Sum Theorem If the measures of two angles of a triangle are known, the measure of the third angle can always be found. Angle Sum The sum of the measures of the angles of a triangle is 180. Theorem In the figure at the right, m/A 1 m/B 1 m/C 5 180. Lesson 4-1 Classify Triangles by Angles One way to classify a triangle is by the measures of its angles. • If one of the angles of a triangle is an obtuse angle, then the triangle is an obtuse triangle. • If one of the angles of a triangle is a right angle, then the triangle is a right triangle. Median. A line segment through a vertex that connects it to the midpoint of the opposite side. Pons asinorum. If two sides of a triangle are congruent, then the angles opposite them are congruent. Study with Quizlet and memorize flashcards containing terms like Congruent polygons, Rigid motions, Included angle and more.The exercises are designed to aid your study of mathematics by reinforcing important mathematical skills needed to succeed in the everyday world. The materials are organized by chapter and lesson, with two Study Guide and Intervention worksheets for every lesson in Glencoe Geometry. Always keep your workbook handy.The Twelve Triangles quilt block looks good from any angle. Download the free quilt block and learn to make it with the instructions on HowStuffWorks. Advertisement Equilateral? Is... ….

This Award recognizes individuals who have made contributions to the CVRI Council over a continuing period and have made substantial professional contributions. The scientific coun...An exterior angle of a triangle is equal to the sum of the opposite interior angles. Every triangle has six exterior angles (two at each vertex are equal in measure). The exterior angles, taken one at each vertex, always sum up to 360 ° 360\degree 360°. An exterior angle is supplementary to its adjacent triangle interior angle.2. BALLOON The angle of depression from a hot air balloon in the air to a person on the ground is 36°. If the person steps back 10 feet, the new angle of depression is 25°. If the person is 6 feet tall, how far off the ground is the hot air balloon? Study Guide and Intervention (continued) Angles of Elevation and Depression 8-5 Example 42 ...Figure 4.1.1 4.1. 1. The sum of the interior angles in a triangle is 180∘ 180 ∘. This is called the Triangle Sum Theorem and is discussed further in the "Triangle Sum Theorem" concept. Angles can be classified by their size as acute, obtuse or right. In any triangle, two of the angles will always be acute.Chapter 4 Resource Masters. Study Guide and Intervention. Properties of Isosceles Triangles. An. isosceles triangle. has two congruent sides. The angle formed by these sides is called the. vertex angle. The other two angles are called.4-2 Study Guide and Intervention Angles of Triangles - 32 DATE PERIOD Angle Sum Theorem If the measures of two angles of a triangle are known, the measure of the third angle can always be found Angle Sum The sum of the measures of the angles of a triangle is 180. Theorem In the figure at the right, rnLA + rnZ_B + = 180.the perpendicular bisectors of a triangle intersect at a point called the circumcenter that is equidistant from the vertices of the triangle. angle bisector. a line, segment, or ray that divides an angle into two congruent angles. angle bisector theorem. If a point is on the angle bisector of an angle, then it is equidistant from the sides of ...Step 1 Draw a right triangle and label one acute angle B. Label the adjacent side 3 and the hypotenuse 7. Step 2 Use the Pythagorean Theorem to find b. ... _____ DATE _____ PERIOD _____ Chapter 12 6 Glencoe Algebra 2 12-1 Study Guide and Intervention (continued) Trigonometric Functions in Right Triangles ...Chapter 4 5 Glencoe Geometry LT 2.1 Study Guide and Intervention . Classifying Triangles . Classify Triangles by . Angles. One way to classify a triangle is by the measures of its angles. • If all three of the . angles of … 4-2 study guide and intervention angles of triangles, lesson, with one Study Guide and Intervention and Practice worksheet for every lesson in Glencoe Math Connects, Course 2. Always keep your workbook handy. Along with your …, Transcribed image text: NAME DATE PERIOD 4-1 Study Guide and Intervention Classifying Triangles Classify Triangles by Angles One way to classify a triangle is by the measures of its angles. . If all three of the angles of a triangle are acute angles, then the triangle is an acute triangle. If all three angles of an acute triangle are congruent ... , 6 2 Study Guide And Intervention Parallelograms - 6 2 Study Guide and Intervention Parallelograms Sides and Angles of Parallelograms A quadrilateral with both pairs of opposite sides parallel is a parallelogram Here are four important properties of parallelograms The opposite sides of a parallelogram are congruent The opposite …, Study Guide and Intervention Classifying Triangles Classify Triangles by Angles One way to classify a triangle is by the measures of its angles. • If all three of the angles of a triangle are acute angles, then the triangle is an acute triangle. • If all three angles of an acute triangle are congruent, then the triangle is an equiangular ... , the coordinate plane by an arrow drawn from one point to another Component form: a representa:on of a vector giving its x and y components; eg <3, -4> NAME DATE PERIOD 4-2 Study Guide and Intervention Chapter 4 12 Glencoe Geometry Study Guide and Intervention (continued) Angles of Triangles Exterior Angle Theorem At each vertex of …, Always keep your workbook handy. Along with your textbook, daily homework, and class notes, the completed Study Guide and Intervention Workbook can help you in reviewing for quizzes and tests. To the Teacher. These worksheets are the same ones found in the Chapter Resource Masters for Glencoe Geometry., Behavioral interventions for ADHD can make a positive impact on children with ADHD, as well as their parents. Here are four behavioral strategies you can try. Behavioral therapy ca..., the side opposite the right angle. isosceles triangle legs. the congruent sides of an isosceles triangle. isosceles triangle base. the third side of the triangle. Study with Quizlet and memorize flashcards containing terms like scalene triangle, isosceles triangle, equilateral triangle and more. , Here's where traders and investors who are not long AAPL could go long. Employees of TheStreet are prohibited from trading individual securities. Despite the intraday reversal ..., Find step-by-step solutions and answers to Glencoe Geometry - 9780079039941, as well as thousands of textbooks so you can move forward with confidence., Unformatted text preview: 4-2 Study Guide and Intervention (continued) Angles of Triangles Exterior Angle Theorem At each vertex of a triangle, the angle formed by one side and an extension of the other side is called an exterior angle of the triangle. For each exterior angle of a triangle, the remote interior angles are the interior angles ... , Complete the triangle congruence statement. 1. Determine if the triangles are congruent by SSS, SAS, ASA, AAS, or HL by applying the given information. If the triangles CANNOT be proven congruent, write NONE for the reason. 2. If the triangles are congruent, complete the congruence statement with the name of the second triangle., Always keep your workbook handy. Along with your textbook, daily homework, and class notes, the completed Study Guide and Intervention Workbook can help you in reviewing for quizzes and tests. To the Teacher. These worksheets are the same ones found in the Chapter Resource Masters for Glencoe Geometry., PDF Télécharger [PDF] 74 Study Guide and Word Problems Solutions - Quia 7 4 study guide and intervention trigonometry p Nos 7 4 Study Guide and Intervention Trigonometry Trigonometric Ratios The ratio of the lengths of two sides of a right triangle is called a trigonometric ratio, 7 4 Study Guide and Intervention Trigonometry …, Exterior Angle TheoremAt each vertex of a triangle, the angle formed by one side and an extension of the other side is called an exterior angleof the triangle. For each exterior …, Three angles are 1, 2, and 3. For other angles, use three letters to name them: SRQ, PRT, and SRT. b. Name the sides of 1. RS, RP SR T P Q 1 2 3 Measure each angle and …, 8 1 Study Guide and Intervention Page 6 Section 1.4: Angle Measure 1-4 Angle Measure Geometry Lesson 2-1 Geometry, pg. 5-8 Geo L 4.6 8 4 Study Guide and Intervention 1 Geometry - 1.2 - Linear Measure and Precision Geometry Unit 3 Study Guide VIDEO 8 5 Study Guide and Intervention 2 Webinar: How to Design and Deliver Effective, Geometry Study Guide Lesson 5. NAME 5-3 DATE PERIOD Study Guide and Intervention Inequalities in One Triangle Angle Inequalities Properties of inequalities, including the Transitive, Addition, and Subtraction Properties of Inequality, can be used with measures of angles and segments. There is also a Comparison Property of Inequality., Step 1 Draw a right triangle and label one acute angle B. Label the adjacent side 3 and the hypotenuse 7. Step 2 Use the Pythagorean Theorem to find b. ... _____ DATE _____ PERIOD _____ Chapter 12 6 Glencoe Algebra 2 12-1 Study Guide and Intervention (continued) Trigonometric Functions in Right Triangles ..., Indices Commodities Currencies Stocks, View Homework Help - 4.6 SG.pdf from MATH 101 at John Adams High School. NAME _ DATE _ PERIOD _ 4-6 Study Guide and Intervention Isosceles and Equilateral Triangles Properties of Isosceles Triangles. AI Homework Help. Expert Help. Study Resources. ... In the given triangle ABC, angle A is 90° and segment AD is perpendicular to segment BC. …, 6. If cot A = 8, find the exact values of the remaining trigonometric functions for the acute angle A. Find the measu of angle e. Round to the nearest degree, if necessary. S 50 Solve each triangle. Round side measures to the nearest tenth and angle measures to the nearest degree. 10. 14 cos Il., Indices Commodities Currencies Stocks, Chapter 4 11 Glencoe Geometry NAME _____ DATE _____ PERIOD _____ 4-2 Study Guide and Intervention (continued) Angles of Triangles Exterior Angle Theorem At each vertex of a triangle, the angle formed by one side and an extension of the other side is called an exterior angle of the triangle. For each exterior angle of a triangle, the remote ..., Nov 3, 2022 · Below is the best information and knowledge about 4-2 skills practice angles of triangles with work compiled and compiled by the Emvaobep.com team, along with other related topics such as: 4-2 practice geometry answers, 4-1 skills practice classifying triangles, lesson 3 skills practice angles of triangles, lesson 3 skills practice angles of triangles answer key, 4-2 skills practice congruent ... , 4-5. Study Guide and Intervention. Proving Triangles Congruent—ASA, AAS. ASA Postulate. The Angle-Side-Angle (ASA) Postulate lets you show that two triangles. are …, study Guide and Intervention Isosceles Triangleg Properties of Isosceles Triangles An isosceles triangle congruent ... 2. Each angle of an equilateral triangle measures 600. Find x. p IBO 1-40 180 MLD 197 2. s Go 90 IBO 180 log IBO . Refer to the figure If AC AD, name two congruent angles., VANCOUVER, British Columbia, March 09, 2021 (GLOBE NEWSWIRE) -- Hanstone Gold Corp. (TSX.V: HANS, FSE: HGO) (“Hanstone” or the “Company”) is ple... VANCOUVER, British Columbia, M..., NAME _ DATE _ PERIOD _ 4-1 Practice Angles of Triangles Find the measure of each numbered angle. 1. 2. Find each measure. 3. m∠1 4. m∠2 5. AI Homework Help. Expert Help. Study Resources. ... 4-1_Study_Guide_and_Intervention (1).pdf. ... In the given triangle DEF angle D is 90 and segment DG is perpendicular to segment EF Part A …, Indices Commodities Currencies Stocks, Indices Commodities Currencies Stocks, Geometry Study Guide Lesson 5. NAME 5-3 DATE PERIOD Study Guide and Intervention Inequalities in One Triangle Angle Inequalities Properties of inequalities, including the Transitive, Addition, and Subtraction Properties of Inequality, can be used with measures of angles and segments. There is also a Comparison Property of Inequality., Study Guide and Intervention Workbook 0-07-877344-X 978-0-07-877344-0 ... An exterior angle is any angle outside of the given triangle. 4. The sum of the measures of the angles in a triangle is 360°. 5. An obtuse triangle is a triangle with three obtuse angles. 6.