由下列尺规作图可得
为等腰三角形,且
的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
A.①② | B.②③ | C.①③ | D.②④ |
更新时间:2024-05-08 21:25:12
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【推荐1】如图所示,AB⊥EF,CD⊥EF,∠1=∠F=40°,且A,C,F三点共线,那么与∠FCD相等的角有( )
![](https://img.xkw.com/dksih/QBM/2019/2/20/2144830175182848/2145470332444672/STEM/b566464fc77044c0b638b2489f39647e.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/2019/2/20/2144830175182848/2145470332444672/STEM/b566464fc77044c0b638b2489f39647e.png?resizew=158)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐2】下列说法:(1)两直线平行,同旁内角互补;(2)同位角相等,两直线平行;(3)内错角相等,两直线平行;(4)垂直于同一条直线的两条直线平行,其中平行线的性质是( )
A.(1) | B.(2)(3) | C.(4) | D.(1)(4) |
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【推荐1】如图所示,在
中,
,根据尺规作图的痕迹,可以判断以下结论错误 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76899b3a0bfbbdae7cb1148ad4bf018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】如图,在
中,以
为直径的
经过点
.以点
为圆心,适当长为半径画弧分别交
于点
,再分别以点
为圆心,大于
的长为半径画弧,两弧在
内部交于点
,画射线
分别交弦
、劣弧
于点
,连接
.下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94e1ca12da27075e5241b7c7ce74672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
A.![]() | B.![]() |
C.点![]() ![]() | D.点![]() ![]() |
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【推荐1】如图,已知AB=AC=7,BC=5,以A,B两点为圆心,大于
AB的长为半径画圆弧,两弧相交于点M,N,连接MN与AC相交于点D,则△BCD的周长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/24/940a8250-2bd3-4543-958c-df25dad01235.png?resizew=190)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/24/940a8250-2bd3-4543-958c-df25dad01235.png?resizew=190)
A.12 | B.14 | C.15 | D.17 |
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【推荐2】如图,
的垂直平分线
交
于点D,
,
,则
的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
A.6 | B.10 | C.16 | D.18 |
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【推荐1】下列命题的逆命题成立的是( )
A.全等三角形的面积相等 | B.相等的两个实数的平方也相等 |
C.等腰三角形的两个底角相等 | D.全等三角形的对应角相等 |
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名校
【推荐2】如图所示,
的两条角平分线相交于点
,过点
作EF
BC,交
于点
,交
于点
,若
的周长为
,则
( )cm.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/5b252593-92d1-4978-8428-8e4ef2dd75d5.png?resizew=147)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.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/60ef95894ceebaf236170e8832dcf7e3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3668a3f3ce5b8a272ad92c2ebd233f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63463121cda3796dda1cfa80704a1cdd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/5b252593-92d1-4978-8428-8e4ef2dd75d5.png?resizew=147)
A.10 | B.20 | C.30 | D.40 |
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