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Students practice graphing images of figures after completing rotations of 90°, 180°, or 270° counterclockwise around the origin.

How much does your child know about triangles? Can they figure out the missing angle in each of these triangles?

Students use the Triangle Angle-Sum Theorem to solve for the variable in triangles where two or more angle measures are linear algebraic expressions.

This eighth-grade geometry worksheet introduces students to the Triangle Angle Sum Theorem and has them practice finding a missing interior angle in a triangle.