Dynamic Geometry Software. Step-by-Step construction, Manipulation, and animation

In the figure, a circle D is inscribed in the arbelos ABC (AB, BC and AC are semicircles), prove that ELBK is a square.

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gogeometry.com/geometry/archimedes_arbelo_circle_square.htm

## Sunday, December 21, 2008

### Archimedes' Arbelos and Square

Labels:
arbelo,
Archimedes,
circle,
diameter,
dynamic geometry,
orthic triangle,
square,
Tracenpoche

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