Download CLASSROOM COPY! DO NOT WRITE ON THIS! CRS Geometry

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.