如图,已知
是
的边
上个点,
于点
于点
,
与
交于点
.下列结论:(1)
平分
,(2)
,(3)
, (4)图中共有3对全等三角形,其中一定正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/01381b4c-f6b6-4479-b6f2-06d816c016f1.png?resizew=190)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d71b63d83c9478d367650fd21fa89c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7bdfe3c3c7034e9e3008f145d58728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add16b34ff684f6bc9fdd61c844c356a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e78fb0b6730ac819a1b879ef09de1098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0842e14f333e6952e832ce5552a873d8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/01381b4c-f6b6-4479-b6f2-06d816c016f1.png?resizew=190)
A.1个 | B.2个 | C.3个 | D.4个 |
更新时间:2022-09-24 10:18:59
|
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【推荐1】已知:如图,AC、BD交于O点,OA=OC,OB=OD、则不正确的结果是( )
![](https://img.xkw.com/dksih/QBM/2012/5/16/1573376625057792/1573376665272320/STEM/8aa91e7673f54326a9bfc42c86eba624.png?resizew=122)
![](https://img.xkw.com/dksih/QBM/2012/5/16/1573376625057792/1573376665272320/STEM/8aa91e7673f54326a9bfc42c86eba624.png?resizew=122)
A.AB=CD | B.AB∥CD | C.∠A=∠D | D.∠A=∠C |
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【推荐2】下列命题中,是真命题的是( )
A.面积相等的两个三角形全等; |
B.两边及其中一边的对角对应相等的两个三角形全等; |
C.直角三角形的两个锐角和为90°; |
D.三角形的一个外角等于两个内角的和; |
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【推荐1】如图,
中,
,
是
的中点,
的垂直平分线分别交
、
、
于点
、
、
,则图中全等三角形的对数是( )
![](https://img.xkw.com/dksih/QBM/2022/11/25/3117311873056768/3118086469402624/STEM/060576545ce04927b3fe51a1e03c7fb7.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2022/11/25/3117311873056768/3118086469402624/STEM/060576545ce04927b3fe51a1e03c7fb7.png?resizew=138)
A.1对 | B.2对 | C.3对 | D.4对 |
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【推荐2】
是
的角平分线,过点D作
于E,
于F,则下列结论不一定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761a77e11e1e45c2a8b2d34d22cf8e04.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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