Tasks Engage

This applet is designed to help you discover what happens to the sides, vertex points and area of triangles when the triangle is dilated, enlarged or reduced. The orange triangle is the original. Change its dimensions and then change the blue triangle according to a scale factor of 3,4,1/3, 1/2...

This applet is designed to help you discover relationships of angles created when a transversal line crosses parallel lines. The angle relationships include vertical, corresponding, alternate and linear pairs.