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      Geometry Problem 452: Triangle, Circle, Tangent, Proportional Segments |  
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		The figure shows a triangle ABC and a circle 
		O tangent to AB, BC, and EF at the points A, D, and E, respectively. If 
		AB = c, EF = d, and CF = x, prove that
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      More Problems: |  
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		Proposed Problem 453.Intersecting Circles, Tangent, Circular Segment, Congruence, Area.
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		Proposed Problem 451.Triangle, Median, Congruence, Proportional Segments.
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		Proposed Problem 450.Triangle, Median, Cevian, Congruence, Proportional Segments.
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		Proposed Problem 449.Congruent Tangent Circles, Diameter, Sagitta, Arc, Perpendicular, Chord.
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