Back to Use informal arguments to establish facts about angles and similarity of triangles — Problem 3 · Task Set 25
Use Informal Arguments to Establish Facts About Angles and Similarity of Triangles
Work through each section in order. Show your work where indicated, and state which angle relationship you used to find each answer.
Grade 8·23 problems·~40 min·Common Core Math - Grade 8·container·8-g-a-5
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A
Fluency Practice
Find each missing angle measure. State the relationship you used.
1.
In a triangle, two of the interior angles measure and . Find the measure of the third interior angle, in degrees.