A guide to support parents as they work with their students in the concept of congruence.

This site defines parallel lines, parallel lines cut by a transverse, and congruent triangles. It also contains links for related terms.

[Free Registration/Login Required] This flipchart is a look at angles in geometry. Drawing, labeling, measuring, special angles: (right, straight, acute, obtuse) and congruence.

[Free Registration/Login Required] Explore the relationships between parallel lines and the rules of angle measurements.