已知:等边△ABC,点P是直线BC上一点,且PC:BC=1:4,则tan∠APB=_______ ,
更新时间:2020-09-11 06:42:26
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【推荐1】如图,
中,AB=AC=BC=10,点D、E、F分别在边BC、AB和AC上,AE=6,当以B、D、E为顶点的三角形与以C、D、F为顶点的三角形全等时,BD=______ .
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【推荐1】如图,在
中,
,
,点
为
内一点,
,
,连接
,将
绕点
按逆时针方向旋转,使
与
重合,点
的对应点为点
,连接
,
交
于点
,则
的长为________
.
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【推荐2】如图,把等边△ABC沿着D E折叠,使点A恰好落在BC边上的点P处,且DP⊥BC,若BP=4cm,则EC=______ cm.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/89a55216-1de6-49b3-b754-d34775373036.png?resizew=153)
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