

Problem 458: Square, Semicircle, Circular Sector,
Internal Common Tangent, Measurement

The figure shows a square ABCD of side a.
The semicircle of diameter AB and the circular sector of center D are
tangent at E. If FG is the internal common tangent, prove that
.
See also:
Artwork of Problem
458.


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Problem 458, Artwork. PicSketch for iPhone and iPad, Photo Filter Effects
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