如图,已知在矩形
中,E是边
的中点,连接
并延长,与
的延长线交于点F,连接
和
.
是平行四边形;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcca8b9ba7a9fdd7d18ce9c1e86d2cd5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e82a0052299f414cff1e7afcc5aa19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
更新时间:2023-07-08 09:14:44
|
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解答题-证明题
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【推荐1】如图,A,B,C,D四点在同一条直线上,
,
,
.
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb27272b4eb9ed057dd3b4d40697e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f4db16b8c19d60afe5e5ef9344132f.png)
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求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff56ea00ca90825f3d95809de24f639.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐2】在矩形
中,点
在
上,
,且
,垂足为
.
(1)求证:
;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4530692a4b43a34bf48b3540ac5c9d53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a397d254c11a239aa70060d8a23a2c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/10/f5735377-d83a-480a-a22c-43db0c4156bb.png?resizew=158)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/379d9ca729a4b9ce0428c391fc5f1952.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccf3746205daae4787d8e31d74ba79e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b30638b723fb7556f7ca715f9b0c568.png)
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您最近一年使用:0次
解答题-证明题
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名校
【推荐1】如图,将矩形纸片
沿着过点D的直线折叠,使点A落在
边上,落点为F,折痕交
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(1)求证:
;
(2)若
,求
的长;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8094b547ecd7a0e7fcde4caffb08dd6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/979097265dc891d2c1bef3967d89fc8a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e046ae4f4375f58cdda02121c6d93a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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解答题-作图题
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(0.85)
【推荐2】如图,在△ABC中,∠ACB=90°,AC=4,BC=6.
(1)尺规作图:将△ABC绕BC的中点O旋转180°,得到△A
B
C
;(保留作图痕迹,不写作法)
(2)求点A与点A
之间的距离.
(1)尺规作图:将△ABC绕BC的中点O旋转180°,得到△A
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9041a3dc5017c192cad54b40aa3f35f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9041a3dc5017c192cad54b40aa3f35f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9041a3dc5017c192cad54b40aa3f35f9.png)
(2)求点A与点A
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9041a3dc5017c192cad54b40aa3f35f9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/321463f8-1959-4f96-abef-8c2dc1ee1d66.png?resizew=146)
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解答题-作图题
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【推荐1】如图,
中,点
在
上,
.
![](https://img.xkw.com/dksih/QBM/2021/7/13/2763083231879168/2770364200558592/STEM/ce422db0-ab4b-441f-af2b-a5b04afcde53.png)
(1)利用直尺和圆规作出
的平分线,交
于点
;(不写作法,保留作图痕迹)
(2)求证:四边形
是平行四边形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d774977dd266bb77d9e9b7eb8acad5.png)
![](https://img.xkw.com/dksih/QBM/2021/7/13/2763083231879168/2770364200558592/STEM/ce422db0-ab4b-441f-af2b-a5b04afcde53.png)
(1)利用直尺和圆规作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9766e5eb6796dafc5ffe212afdfc43c0.png)
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解答题-证明题
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(0.85)
名校
【推荐2】如图,点
、
、
、
在一条直线上,
且
,
.
;
(2)求证:四边形
是平行四边形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7f27111303c38eaf43bf547e460a33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d9cc37ac19a35e2bf17921443dbb81.png)
(2)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8edaecff592cf677f45d8c54340a89f2.png)
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