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[几何] 2019文科数学三模10题解析几何

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走走看看 Posted 2019-5-14 13:25 |Read mode

2019合肥市三模文科数学题10.png

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kuing Posted 2019-5-14 13:43

圆心到直线的距离 = 半径的一半呗，这么简单

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Author| 走走看看 Posted 2019-5-14 17:34

回复 2# kuing

K大师思维敏捷，太牛了！

一开始还以为要比照椭圆，后来才想到，圆有独特的性质：同弧上的圆周角相等。

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