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A Lock

© Copyright 2000, Jim Loy

This is my first (fifteenth, actually) attempt at designing a lock. There is a handle on the right (the bright red point). It cannot be moved downward, because it is locked in place by many of those circles that you see. Move the other bright red dot to the correct position (of twenty positions), and the handle will be free to move to about 45 degrees downward. I am working on a 20x20 combination lock.

Please enable Java for an interactive construction (with Cinderella).

The above Java interactive demonstration was created with Cinderella (a geometry program).


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