Geometry Problem 1354: Circle, Tangent Lines, Secant, Chord, Center, Parallel Lines

Proposition

In the figure below, AB and AC are tangent to a circle of center O. OA cuts BC at D, AEF is a secant and ED cuts the circle at G. Prove that GF and BC are parallel.


Geometry Problem 1354: Circle, Tangent Lines, Secant, Chord, Center, Parallel Lines. Math Infographic, Tutor



See also:
Typography of problem 1354.