如图,
中,
,
,则
边上的高为______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ae84a3a71fefa22c18dcaa1e8ceede.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54486ba185c2598d90d996821c7e8159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/23/6cc02e5c-6256-4edc-8f20-361cfe5edbbb.png?resizew=244)
更新时间:2021-04-20 09:19:43
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【推荐1】如图,
是等边三角形
的角平分线,
,垂足为E,边
的垂直平分线交
于点P,交
于点F.若
,则
的长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
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【推荐2】如图,在平面直角坐标系中,菱形
的顶点
的坐标为
,顶点
都在第一象限,若
,则顶点
的坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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【推荐1】如图,
是
的直径,
切
于点A,
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于点C,连接
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b6fede7d2da3ccecf3f9d32a10346c3.png)
______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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【推荐2】用一条宽度相等的足够长的纸条打一个结(如图1所示),然后轻轻拉紧、压平就可以得到如图2所示的正五边形
.图中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4397f6e86c69e6b597e7e8635afbfb8.png)
____ 度.
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