如图,点是
的弦
的中点,
经过圆心
交
于点
,
,求
的半径为
更新时间:2024-03-29 12:29:33
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【推荐1】如图,在矩形
中,
是
的中点,连接
,将
沿着
翻折得到
,
交
于点
,延长
,
相交于点
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3943224ebad9517a0611e0a0b039952.png)
________ .
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【推荐2】如图,在
中,点F为其重心,连接
、
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于点D、E,且
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_____ .
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【推荐1】如图,是一个高速公路的隧道的横截面,它的形状是以
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,
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【推荐2】如图,AB是⊙O的直径,弦CD⊥AB于点E,如果
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