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| 送交者: 車五進二 2019月12月19日08:54:49 於 [靈機一動] 發送悄悄話 |
| 回 答: 趣味的數學-202 由 gugeren 於 2019-12-16 01:29:12 |
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There is a version (or form) of Ceva's theorem that states, if lines AM, BN, CL intersect at a single point P inside a triangle ABC, then PM/AM + PN/BN + PL/CL = 1. |
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