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

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

Model how to find a missing exterior angle with this eighth-grade geometry worksheet!

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.

Students practice using the Pythagorean theorem to find missing hypotenuse lengths on right triangles in this eighth-grade geometry worksheet!