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.
The idea of this applet is to use the three most common motions to get a target to a destination. The preimage (starting cat) is
slid by vector BC, then flipped over the other line segment, then turned by the angle controlled by A around the center of rotation. Adjust the
points you have control over to get the copy cat onto the yellow target cat.
Challenge: it should always be possible using only two of the motions.
Super challenge: Can you do it only changing the turn (center and angle)?
Note: you can move the target cat by showing the controls for its motion and moving them around. What motions are used to get the target cat from the original?
(right click and "save target as...")