This page uses
JavaSketchpad, a World-Wide-Web component of
The Geometer's Sketchpad.
Copyright © 1990-2001 by KCP Technologies, Inc. Licensed only for non-commercial use.
In the sketch the goal is to identify which colors of triangles are similar. After the show originals button is pushed,
students can check by changing the original triangles.
(right click and "save target as..."). Note in sketchpad all the triangles are movable even before showing the originals.