如图,点B、E、F、C在一条直线上,AB=DE=10,AC=DF,BE=CF=CE.
![](https://img.xkw.com/dksih/QBM/2019/10/9/2308126222360576/2308525854629888/STEM/72b10aa5787d4ee9beb7edab85df92fd.png?resizew=171)
(1)求证:AB∥DE;
(2)求EG的长.
![](https://img.xkw.com/dksih/QBM/2019/10/9/2308126222360576/2308525854629888/STEM/72b10aa5787d4ee9beb7edab85df92fd.png?resizew=171)
(1)求证:AB∥DE;
(2)求EG的长.
更新时间:2019-10-10 00:10:47
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【推荐1】如图,△ABC是直角三角形,以斜边AB为直径作半圆,半圆的圆心为O,过A、C两点作半圆的切线,交点为D,连接DO交AC于点E.
(1)求证:OD∥BC;
(2)若AC=2BC,求证:AB=AD.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/d1ffb7eb-6cb2-43a6-a43e-2153f9659509.png?resizew=135)
(1)求证:OD∥BC;
(2)若AC=2BC,求证:AB=AD.
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【推荐2】如图,
是
的直径,
是
的切线,
是切点,
与
交于点
.
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(1)如图①,若
,
,求
的长;
(2)如图②,若
为
的中点,求证:直线
是
的切线.
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(1)如图①,若
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(2)如图②,若
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【推荐1】如图,在半径为6的扇形
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各内角的度数.
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【推荐2】如图,在
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两点在运动过程中,
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