[几何] 内切球问题

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敬畏数学 posted 2022-9-16 14:26 |Read mode

在四棱锥P-ABCD中，$ \angle APB=\angle BPC=\angle CPD=\angle DPA=60°， $且$\angle APC=\angle BPD,$$PB=PD,$$ PA=\sqrt{6} ，$该四棱锥存在半径为1的内切球，则$PC=$

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2025-6-8 07:02 GMT+8

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