Cyclic Pentagon
Source:
April 12, 2008
trigonometrysymmetrygeometryPythagorean Theoremperpendicular bisector
Problem Statement
Cyclic pentagon has a right angle \angle{ABC} \equal{} 90^{\circ} and side lengths AB \equal{} 15 and BC \equal{} 20. Supposing that AB \equal{} DE \equal{} EA, find .