Online Geometry
Problem 745: Circle, 90 Degrees, Chord, Congruence,
Perpendicular, Metric Relations. Level: High School, Honors Geometry, College,
Mathematics Education

The figure shows a circle O. The measure of
angle ACD is 90 degrees, AB = BD, and the measure of angle AEB = 90
degrees. If AE = 5 and CE = 2, find CD.