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Name: ______________________________________________________ Ms. Kinzer Date: ____________ Period # _____ Aim: How are the sides and angles of a triangle related, if there are two or more congruent sides or angles? Smart Start: Classify each triangle by its sides. 1. 2. 3. Find the missing measurements. Remember to draw each figure! 4. In Δ , if 5. In Δ , if and and Base Angles Theorem Converse of the Base Angles Theorem Example 1 what is ? what are the measure so of and ? Corollary to the Base Angles Theorem If a triangle is equilateral, then it is ________________________. Corollary to the Converse of the Base Angles Theorem: If a triangle is equiangular, then it is ___________. Example 2 Find the measures of angles R, S, T. Practice: Complete the following statements for questions 3 and 4 using the figure on the right. 3. 4. Find the missing measurement. 5. 6. 7. Find the value of . Write an equation and show your work! 8. 9. 10. 11.