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NAME DATE PERIOD. 1-4 Study Guide and Intervention (cant/hUEd) (“1. Angle Measure I _. Congruent Angles Angles that have the same measure are congruent angles. A ray that divides an angle into two congruent angles is called an angle M N bisector. In the ?gure,. FIT is the angle bisector of AMPR. Point Nlies in the
Study Guide and Intervention. Similar Triangles. Identify Similar Triangles Here are three ways to show that two triangles are similar. AA Similarity. Two angles of one triangle are congruent to two angles of another triangle. SSS Similarity. The measures of the corresponding side lengths of two triangles are proportional.
Chapter 4. 5. Glencoe Geometry. 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,
?. § 4-2, Study Guide and Intervention. Angles of Triangles. 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. B. Theorem In the figure at the right, m2. A + m2 B + m2 C = 180. s.
1-4 Study Guide and Intervention. Angle Measure. Measure Angles If two noncollinear rays have a common endpoint, they form an angle. The rays are the sides of the angle. The common endpoint is the vertex. The angle at the right can be named as ZA, ZBAC, 2CAB, or 21. A right angle is an angle whose measure is 90.
named as ZA, ZBAC, ZCAB, or Z1. A right angle is an angle whose measure is 90. An acute angle has measure less than 90. An obtuse angle has measure greater than 90 but less than 180. A. C. B. 1 a. Name all angles that have R as a vertex. Three angles are Z1, Z2, and Z3. For other angles, use three letters to name.
Lesson 1-4. Chapter 1. 25. Glencoe Geometry. B. A. D. E. C a. Name all angles that have R as a vertex. 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. Study Guide and Intervention. Angle Measure. Measure Angles If two
Study Guide and Intervention. Ratios and Proportions The measures of the angles are 2(20) or 40°, 3(20) or 60°, and 4(20) or 80°. Exercises. 1. The ratio of the measures of the three angles of a triangle is 7:9:20. Find the measure of each angle of the triangle. 35°, 45°, 100°. Example 1. Example 2. 7-1. 4x°. 2x°. 3x°. Н.
Study Guide and Intervention. Angle Measure. Measure Angles If two noncollinear rays have a common endpoint, they form an angle. The rays are the sides of the angle. (USQ Pfc'fl'flCi'OF). 4.LMPR 110) Owl/“5.6. L - . 5. LRPN 70) n9.“ 6.LNPS 115', @(Uk. @ Glencoe/McGraw-Hill 19. DE. Glencoe Geometry. Lesson 1-4
230, 490. 7. 290. 8. 690. 9. 420. 70, 650. 330, 30. 300, 60. 10. 9. 11. 3. 8. 12. 6. 5. 19. 9. ,. 17. 9. 19. 8. ,. 13. 8. 16. 5. ,. 4. 5. 13. 4. 7. 14. 15. 4. 15. 1. 6. 3. 4. ,. 15. 4. 7. 4. ,. 4. 11. 6. ,. 6. 16. 17. 5. 17. 3. 5. 18. 1. 4. 1. 7. 5. ,. 3. 5. 3. ,. 11. 3. 5. 4. ,. 3. 4. Study Guide and Intervention (continued). Angles and Angle Measurement.
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