1. WesleyChristieCassieCarlos SmartBoard KatieAntony’oMarlena MikeNaJWKimDavidAndreiJeff BrittanyChelseaAnthonySaraLydiaBrianna DanielleLateshaLouisSochimaVince Geometry 217 – C216 – Block 5 Door

2. Warm-up

3. Agenda Homework Review Chapter 4 Identifying Congruent Triangles Bring your books for Wednesday

4. 4-2 Study Guide

5. 4-2 Practice

8. 4-2 Enrichment m  D + m  E + m  F = 180 m  D + 3(m  D) + 3(m  D) - 9 = 180 7(m  D) - 9 = 180 7(m  D) = 189 m  D = 27, m  E = 81, m  F = 72

9. 4-2 Enrichment m  R + (m  R - 5) + (m  R + 5) = 180 m  R + m  S + m  T = 180 m  R = 60, m  S = 55, m  T = 65

10. 4-2 Enrichment m  J + 4(m  J) + 5(m  J) = 180 m  J + m  K + m  L = 180 m  J = 18, m  K = 72, m  L = 90

11. 4-2 Enrichment m  X + 2(m  X) - 7 + 2(m  X) + 2 = 180 m  X + m  Y + m  Z = 180 m  X = 37, m  Y = 67, m  Z = 76

12. 4-2 Enrichment

13. 4-2 Measuring Angles Review

19. 4-3 Exploring Congruent Triangles ABC

20. 4-3 Exploring Congruent Triangles DEF

21. Congruent Sides corresponds to

22. Congruent Angles

23. Congruence Transformations Sliding, Rotating and Flipping does not change congruence.

24. 4-3 Exploring Congruent Triangles

27. W

28. Definition of Congruent Triangles Two triangles are congruent if and only if their corresponding parts are congruent. CPCTC – Corresponding Parts of Congruent Triangles are Congruent

29. Answers Ahead

30. 4-3 Study Guide

33. Homework 4-3 Study Guide & Practice