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Old 2006-09-27, 20:58   #7
Wacky's Avatar
Jun 2003
The Texas Hill Country

2·541 Posts

First create a "doughnut". The radius of the hole is half that of the circle. Thus, the hole has 1/4th of the area.
Next divide the remainder into 3 equal parts.
The easiest way would be to use radial lines. But this is not allowed.
Therefore simply rotate the outer endpoints a uniform distance along the circumference. These three parts will be congruent and each equal in area to the center circle.
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