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Online Math: Geometry Problem 1039: Isosceles Triangle, Circle, Tangent Line, Parallel Line. Level: School, College.

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The figure below shows an isosceles triangle ABC with AB = BC. Circle O is tangent to BC at D and cuts AB at E. If CF (F on AB) is parallel to DE, prove that FD is parallel to AC.

  

Geometry Problem 1039: Isosceles Triangle, Circle, Tangent Line, Parallel Line

 

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Last updated: Sep 19, 2014