CCSS 8.G.1B (Common Core, 8th Grade): "Angles are taken to angles of the same measure." The worksheets below practice this standard. Each one is a free printable PDF with an answer key, comes in multiple versions, and can also be assigned digitally - no login or account needed.
Geometry Understand congruence and similarity using physical models, transparencies, or geometry software.1Verify experimentally the properties of rotations, reflections, and translations:bAngles are taken to angles of the same measure.