## Kempe's Multiplicator

To accompany Folding and Unfolding in Computational Geometry:
Part I: Ch.4: Kempe's Universality Theorem:Fig.19

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The first construction multiplies the given angle by two.(Also known as
Kempe's reversor).

The second construction extends the first, and shows how to multiply
a given angle by 3. He calls it a "multiplicator." It can
clearly be extended to multiply any given angle by a positive integer r.

Click on and drag the green point.
The three angles incident to A are always equal to each other.
(Again, the scale of the linkage can be adjusted by dragging point B.)

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Applets created by Dessislava Michaylova, modified by Michiko Charley