将一副学生用三角板(一个锐角为
的直角三角形,一个锐角为
的直角三角形)如图叠放,则下列结论中错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/25/16b951f5-e890-4f53-8c1d-fb848a67cf2c.png?resizew=248)
A.![]() ![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-08-25 20:03:19
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【推荐1】如图(1),将一副直角三角板两斜边摆放在同一直线上,且点
,
重合,固定含
角的三角板
,将含
角的三角板
从图(
)的位置,沿射线
平移至图(
)的位置,则平移过程中,根据两个三角板的摆放位置,下列钝角:
,
,
,
,
,
,
,沿三角板的边缘能直接画出的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b342d5cb6dd1c84a82f6aca68ed829c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c030b25575d683af91c06e6a3e4f463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e4dd6baf95be502586df9f93582ddc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3b753ad06d7e5a41d809c8d32552e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5afd5f10497ab8aa1bb169e5cc1d4d92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84288b493b64c3a30466fb9075621da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82cee75366046d8b13d19f2e0ed7fccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be816ce1190862dc4f77d0d06f70efb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7de808164419b036f7ccc7d59c4e694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3967e1f0d3a09a8562b4d1378c8c0c19.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/f8d0a457-b1d0-49a8-a570-3b64499e66c7.png?resizew=575)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐2】一副直角三角板如图摆放,点F在BC的延长线上,∠B=∠DFE=90°,若DE∥BF,则∠CDF的度数为( )
![](https://img.xkw.com/dksih/QBM/2022/5/10/2976393222668288/2976990056292352/STEM/5c1bf827-9e02-4569-9441-883ff2123d67.png?resizew=156)
![](https://img.xkw.com/dksih/QBM/2022/5/10/2976393222668288/2976990056292352/STEM/5c1bf827-9e02-4569-9441-883ff2123d67.png?resizew=156)
A.10° | B.15° | C.20° | D.25° |
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【推荐1】已知
,点
在
的平分线上,
,以点
为圆心,
为半径作
,则
与
的位置关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/371e68c9ddbd72cea2b70a1492875d13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28de00884c0ddaba49a2b050731a2bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.相离 | B.相交 | C.相切 | D.不确定 |
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【推荐2】如图,已知∠AOB=70°,OC是∠AOB的平分线,OD是∠BOC的平分线,那么
的度数是( )
![](https://img.xkw.com/dksih/QBM/2018/1/15/1861050607476736/1863640322179072/STEM/47e91526-7501-45be-b06f-0200b4621972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
![](https://img.xkw.com/dksih/QBM/2018/1/15/1861050607476736/1863640322179072/STEM/47e91526-7501-45be-b06f-0200b4621972.png)
A.52º | B.52º30′ | C.50º10′ | D.52º50′ |
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【推荐1】若一个三角形的三个内角不相等,那么它的最大角不能小于( )
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,
,
,
,垂足分别为点E,F,
,则
等于()
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b97348d501d3118e4eeac8c55b34da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d276d0010fd458383ea3dd61415e1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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