Go Geometry Problem Problem 676: Circles, Diameter, Tangent, Chord, Metric Relations

The figure shows a circle O with diameter AB, BC is tangent to circle O at B. CA meets circle O at D. Circle of diameter AD meets AB at E. Circle of diameter AE meets AC at F. If AD = a, CD = b, and EF = x, prove that Formula to prove.

Circle, Diameter, Metric Relations
See also: Geometry problem 676: Typography in motion.


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