Angle-Angle Similarity Theorem Notes and Practice

This resource was developed to partially meet the requirements of the 8th Grade Geometry standard below:

CCSS.MATH.CONTENT.8.G.A.5

Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles*

*This resource does NOT explore the proportional side relationship of similar triangles in depth.

It contains the following resources:

1) Angle-Angle Theorem of Similar Triangles Notes

2) Hands-On “Cut & Match” Exploration of Angle-Angle Theorem for Similar Triangles (Multiple ways to use)

3) “Match Them Up!” Practice Worksheet to Reinforce Hands-On Exploration

4) 20 Practice TRUE/FALSE & Multiple-Choice Questions

5) 10 Question Quiz in both hard copy and Google Forms formats

6) Answer key to all parts