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CLASSROOM COPY! DO NOT WRITE ON THIS! CRS Objective CW#38H: Classifying Triangles (Triangle Sum Theorem & Ext. Angle Theorem Honors Geometry Geometry Content; PPF 601 Apply properties of 30-60-90, 45-45-90, similar and congruent triangles 8.4 Identify and explain characteristics of different types of triangles (Acute, Obtuse, Right, Scalene, Isosceles, Equilateral); 8.5 Use and be able to prove the triangle sum theorem; 8.6 Use exterior angle theorem to find a missing angle Draw the figures below into your notebook! 1) Classify the triangle by its sides. 2) Classify the triangle by its angles. 3) Classify RST by its sides. Then determine if it is a right triangle. 4) Graph the given triangle and classify it by its sides. Then determine if it is a right triangle. a) A(3, l), B(3,4), C(7, 1) b) A(2, 2), B(6, 2), C(4, 8) Step 1: Use the _______________________________ to determine the side lengths. Use the _________________________ to find RS, ST and TR. Step 2: Use the _______________________________ to check for right angles. Find the _________ of RS, ST, and TR. 5) Find the value of y. 6) Find the value of x. Define YOUR Pride. 7) Find the measure of the exterior angle shown. 8) Find the measure of the exterior angle shown. Independent Practice Pages 221 – 222: 1 – 6, 11 – 13, 17 – 19, 32 – 37 Define YOUR Pride. Define YOUR Pride. Define YOUR Pride. Define YOUR Pride.