


Problem 523: Tangent Circles, Diameter Perpendicular, Collinearity. Level: High School, SAT Prep, College geometry
The figure shows circles C_{1}
and C_{2}, tangent at C. Diameter DE extended and FG are
perpendicular. If FG is tangent to C_{2},
at G. Prove that the points D, C, and G are collinear.
Post a comment or solution.



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Problem 521.
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Problem 520.
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