Geometric Artwork of Problem 76. Square, Circle and
Area. PicSketch for iPad
Given a square ABCD 1, the inscribed
circle 2, the arc BD of center A. S is the area of the lune EF,
S1, S2, and S3 are the shaded
areas. Prove that S = S1
+ S2 + S3.
See also: Problem
76.