如图1.已知Rt△ABC中,∠ACB=90°,D、E分别是AC、BC的中点,连接DE,tan∠BAC=
.
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943186345238528/2963929735307264/STEM/8c68a0a0-805e-42cb-98f4-b4431e2c2197.png?resizew=533)
【问题背景】如图2,将△CDE绕C点旋转一定的角度,连接BE、AD,求证:△ADC∽△BEC;
【尝试运用】如图3,当△CDE绕C点旋转过程中,AD、BE交于点H,连接CH,CH=5,求AH﹣
BH的值;
【拓展延伸】如图3,若CD=1,当△CDE绕C点旋转过程中,直接写出△ABH面积的最大值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943186345238528/2963929735307264/STEM/8c68a0a0-805e-42cb-98f4-b4431e2c2197.png?resizew=533)
【问题背景】如图2,将△CDE绕C点旋转一定的角度,连接BE、AD,求证:△ADC∽△BEC;
【尝试运用】如图3,当△CDE绕C点旋转过程中,AD、BE交于点H,连接CH,CH=5,求AH﹣
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
【拓展延伸】如图3,若CD=1,当△CDE绕C点旋转过程中,直接写出△ABH面积的最大值是
更新时间:2022-04-22 23:53:23
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