PUMaC 2007 · 个人决赛（B 组） · 第 1 题
PUMaC 2007 — Individual Finals (Division B) — Problem 1
题目详情
- Let C and D be two points, not diametrically opposite, on a circle C with center M . Let H be a 1 point on minor arc CD . The tangent to C at H intersects the circumcircle of CM D at points A 1 π and B . Prove that CD bisects M H iff ∠ AM B = . 2
解析
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Original Explanation
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