These write-on/wipe off chart sets will teach your students a variety of geometry related topics including" "Geometry and Measurement", "Lines, Angles and Circles", "Congruence, Transformation, and Symmetry", "Plane Geometry", "Arithmetic and Geometric Sequences", and "Numerical and Geometrical Proportions". Each 12" x 18" chart is laminated and double-sided: Side 1 features a graphic overview of the topic; Side 2 provides "write-on/wipe-off" activities.