The figure shows three circles (representing head and ears of Mickey Mouse) where a, b and c are respective radii, and d is the length of the exterior tangent. Prove that: http://gogeometry.com/problem/p041_sangaku_equation.gif.

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- September 29th 2012, 04:58 AMgeniusgarvilMickey mouse problem
The figure shows three circles (representing head and ears of Mickey Mouse) where a, b and c are respective radii, and d is the length of the exterior tangent. Prove that: http://gogeometry.com/problem/p041_sangaku_equation.gif.

- September 29th 2012, 06:23 PMchiroRe: Mickey mouse problem
Hey geniusgarvil.

Can you show us what you have tried and the relationships you have used so far? - October 2nd 2012, 06:47 PMrichard1234Re: Mickey mouse problem
Hint: Find BC. Then compare triangles AFG and ABC.