1. Applying the Exterior Angle Theorem Find the measure of 1. 1. 2. 3. Find the value of x.  x 72 o (2x – 11) ⁰

2. Roundtable Each group member will begin work on their piece of paper. When rotate is called, papers will be rotated clockwise and each person will continue on their new page where the previous person left off. When all individuals have written on each paper. The group will come back together and check answers. When all group members agree on the answers, staple the papers together and hand them in. Only one paper will be graded for work and correctness.

3. Warm-Up: Find the value of x.

4. 4.3 Triangles and Angles Objectives: Identify congruent figures and corresponding congruent parts Vocabulary: congruent triangles

5. Congruent Triangles ∆ABC ∆FDE ***Congruent triangles must have ALL congruent: -Corresponding Angles -Corresponding Sides A B C E D F B A C F D E

6. H G F E 4x – 3 cm (5y – 12)° A C B D 9 cm 113º 86º 91º 10 cm 8 cm 7 cm

7. Write a congruency statement and find x.

8. ACT Practice 3.

9. Homework:  p.259-262 #13-16, 18, 28, 37  Quiz 4.1-4.3, 4.6 Tuesday