Transforming Angles

Students apply rigid transformations to justify that vertical angles are always congruent and corresponding angles are congruent when parallel lines are cut by a transversal.

By Amplify Classroom

Grades: 8th Grade

Subject: Math

Learning goals: Today’s Goals • Understand that rigid transformations move lines to lines and parallel lines to parallel lines. • Use rigid transformations to explain why vertical angles and corresponding angles on parallel lines are congruent. • Justify which angles formed by parallel lines cut by a transversal are congruent using the language of transformations. (Speaking, Listening, and Writing) Additional Materials protractors; tracing paper