「正方形內的鈍角」問題 | Mo 仔 Math
Synopsis
在正方形ABCD 中選一點P，∠APB 為鈍角的機會率是甚麼呢？ 圓周角定理證明(半圓)： https://ggbm.at/jhvy72ft 把P 沿原點O ...
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