Math Geometry Problems, Online Education


 Problem 180. Circles Tangent Externally, Common External Tangents, Areas.

In the figure below, circles A and B are tangent externally. CD and EF are the common external tangents.  Lines AD, AF, BC, and BE determine the shaded regions of areas S, S1, and S2, (1) Prove that S1 =  S2, (2) S = S1 + S2. View or post a solution

Circle tangent externally, triangle and quadrilateral area


See also:
Typography of problem 180.



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