If you are doing distance learning, this geometry investigation is perfect for exploring the "Angle Angle Triangle Similarity Postulate (AA)." Students ultimately come to understand that when two angles of one triangle are congruent to two corresponding angles of another triangle, then the corresponding side lengths are proportional. Thus, the triangles are similar. If you want to stick with the "Angle Angle Angle Triangle Similarity Postulate (AAA)" then you can emphasize to students that when