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Geometry Monday 12/8/14 Warm-ups ◦ Work with a partner to complete pg. 184 Check in/Discuss 4.1 Practice WS Today, you will be able to: Discussion/Notes/Guided Practice ◦ Section 4.2 Angles of Triangles Apply the Angle Sum Theorem Assignment: Apply the Exterior Angle Theorem ◦ A#4.2 page 188 # 1, 2, 10-27 all ◦ Begin studying for Quiz – Sections 4.1, 4.2, 4.6 Success Criteria: Quiz Sections 4.1, 4.2, 4.6 Thurs 12/9 Q&A Guided Practice Homework Spirit Week Tues: Favorite Character Day Angle Sum Theorem The sum of the measures of the angles of a triangle is ______. Given: ABC Prove: m4 m5 m2 180 Example 1 Find the missing angle measures. Guided Practice Self-Evaluation - Rate each learning target: Apply the Angle Sum Theorem 4 3 2 1 0 Example & Guided Practice Exterior Angle Theorem Find the missing angle lengths in the following triangles: 1. 2. 105 138 58 112 Self-Evaluation - Rate each learning target: Apply the Exterior Angle Theorem 4 3 2 1 0 Proving Exterior Angles Theorem by Induction Based on the previous examples we can make the conjecture that… Proving the Exterior Angles Theorem Deductively 2 1 3 4 Example 2 Find the measure of each numbered angle in the figure Guided Practice for Example 2 Self-Evaluation - Rate each learning target: Apply the Angle Sum and Exterior Angle Theorems 4 3 2 1 0