已知,如图,在
中,
,
是
的中线,F是
的中点,连接
并延长到E,使
,连接
、
.
是菱形;
(2)若
,
,求菱形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f30ae3fda08c3739a33ab09cb4eea39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b0b077bfd3700e78db35bea761ae29.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d2231c7a2875ab6d423dff3ead4069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b0b077bfd3700e78db35bea761ae29.png)
23-24八年级下·江西南昌·期中 查看更多[2]
更新时间:2024-05-20 21:35:07
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相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在
中,
,
,点D在边AC上,且线段BD绕着点B按逆时针方向旋转120°能与BE重合,点F是ED与AB的交点.
![](https://img.xkw.com/dksih/QBM/2022/1/10/2891474648522752/2892815298347008/STEM/8b265741-b3a1-42a2-962f-5d1e327b0758.png?resizew=232)
(1)求证:
;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://img.xkw.com/dksih/QBM/2022/1/10/2891474648522752/2892815298347008/STEM/8b265741-b3a1-42a2-962f-5d1e327b0758.png?resizew=232)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a6574405000dab3fec93b438aa2de0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2014901ac72351850b0c21d96d7b44a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024015816ece1fd176186ed0f04db8f9.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图所示,在四边形
中,已知
,
,延长线段
到E,使
,连接
、
.
(1)求证:
;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62dcef170114cd71b99f6646d364ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/16/816c08b7-652e-43be-b1bc-04cca8391252.png?resizew=191)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120985fdf0be90da495f2d22f0827aec.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7383dc47586a63428fd1a2aea81003c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6344778ed1e75c1a99e2268468081867.png)
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解答题-证明题
|
适中
(0.65)
【推荐3】在Rt△AOB中,∠AOB=90°.
![](https://img.xkw.com/dksih/QBM/2021/7/12/2762861995229184/2816503069466624/STEM/27e21597-6927-4709-85cb-3001da084e06.png?resizew=430)
(1)如图①,以点A为直角顶点,AB为腰在AB右侧作等腰Rt△ABC,使∠BAC=90°,BA=AC,过点C作CD⊥OA交OA的延长线于点D.
求证:△BOA≌△ADC;
(2)如图②,以AB为底边在AB左侧作等腰Rt△ABC,使∠ACB=90°,CB=CA,连接OC,若∠ACO=26°,则∠CBO= 度(直接填空);
(3)如图③,以OB为边在OB左侧作等边△OBC,DO⊥AB于点D,连接AC交OD于E,交OB于F,若OA=OB,AE=6,OE=3.5,则AC的长为 .(直接填空)
![](https://img.xkw.com/dksih/QBM/2021/7/12/2762861995229184/2816503069466624/STEM/27e21597-6927-4709-85cb-3001da084e06.png?resizew=430)
(1)如图①,以点A为直角顶点,AB为腰在AB右侧作等腰Rt△ABC,使∠BAC=90°,BA=AC,过点C作CD⊥OA交OA的延长线于点D.
求证:△BOA≌△ADC;
(2)如图②,以AB为底边在AB左侧作等腰Rt△ABC,使∠ACB=90°,CB=CA,连接OC,若∠ACO=26°,则∠CBO= 度(直接填空);
(3)如图③,以OB为边在OB左侧作等边△OBC,DO⊥AB于点D,连接AC交OD于E,交OB于F,若OA=OB,AE=6,OE=3.5,则AC的长为 .(直接填空)
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解答题-证明题
|
适中
(0.65)
【推荐1】在
中,弦
平分圆周角
,连接
,过点
作DE//AB交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966644197826560/2969158905331712/STEM/36c26e27-8712-4c67-a4e9-a1ce8cc08bb7.png?resizew=418)
(1)求证:
是
的切线;
(2)若
,且
是
的中点,
的直径是
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966644197826560/2969158905331712/STEM/36c26e27-8712-4c67-a4e9-a1ce8cc08bb7.png?resizew=418)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ff2a1f56983349ef292dbf6d1a369d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4056761b8f826eeb6ad8c9a151d3c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】一次函数
的图象与
轴交于点A,且经过点
.
(2)直接在如图所示的平面直角坐标系中画出一次函数
的图象;
(3)点P在x轴的正半轴上,若
是以
为腰的等腰三角形,请直接写出所有符合条件的
点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c6b28d3832f748441f80e9880bfa656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066ab4b2164401859482651f5aacf2f9.png)
(2)直接在如图所示的平面直角坐标系中画出一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c6b28d3832f748441f80e9880bfa656.png)
(3)点P在x轴的正半轴上,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,△ABC中,AB=AC,E、F分别是BC、AC的中点,以AC为斜边作Rt△ADC,求证:FE=FD.
![](https://img.xkw.com/dksih/QBM/2019/1/11/2116474359308288/2119485714939904/STEM/25f135b2e86d49b983059c77a289f5f6.png?resizew=124)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,在
中,
垂直平分边
,交
于点
,
平分
的外角
,
,垂足为点
,
,垂足为点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/ac80e607-b8be-489c-97b7-b1e93a174de7.png?resizew=232)
(1)求证:
;
(2)如果
,求证:点
在
的垂直平分线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47df2d454291078167fdd6eca04883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e64f503acd02b53ac2a26b6af3b27b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/ac80e607-b8be-489c-97b7-b1e93a174de7.png?resizew=232)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b323da81a94eb194f037754c5b8c4b.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】已知:如图,在直角梯形ABCD中,AD∥BC,AB⊥AD,BC=CD,BE⊥CD,垂足为点E,点F在BD上,连接AF,EF.
![](https://img.xkw.com/dksih/QBM/2015/4/1/1573828454490112/1573828460879872/STEM/54f0a26b1e264f8c846f736880e2f265.png?resizew=119)
(1)求证:AD=ED;
(2)如果AF∥CD,求证:四边形ADEF是菱形.
![](https://img.xkw.com/dksih/QBM/2015/4/1/1573828454490112/1573828460879872/STEM/54f0a26b1e264f8c846f736880e2f265.png?resizew=119)
(1)求证:AD=ED;
(2)如果AF∥CD,求证:四边形ADEF是菱形.
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,在△ABC中,M,N分别是边AB、BC的中点,E、F是边AC上的三等分点,连接ME、NF且延长后交于点D,连接BE、BF
(1)求证:四边形BFDE是平行四边形;(2)当△ABC满足什么条件时四边形BFDE是菱形,证明你的结论.
(1)求证:四边形BFDE是平行四边形;(2)当△ABC满足什么条件时四边形BFDE是菱形,证明你的结论.
![](https://img.xkw.com/dksih/QBM/2019/3/26/2169017463783424/2173826680897536/STEM/bca06b41e2cd44afbfcd77638440d6f8.png?resizew=162)
您最近一年使用:0次