The figure shows a circle 1 inscribed in a square ABCD of area S. Points E and F are the tangency point. G is the intersection point of BD and circle 1 and EH is perpendicular to FG. Prove that the measure of angle EAH is 22.5 degrees. Post a comment.
 

See Also:

Proposed Problem 374.
Triangle, Incenter, Internal Angle Bisectors.

Proposed Problem 372.
Circles, Common Internal and External Tangent, Angles.

Proposed Problem 371.
Square, Inscribed circle, Triangle, Area.