如图,在正方形
中,
是边
上的一动点(不与点
重合),连接
,点
关于直线
的对称点为
,连接
并延长交直线
于点
,
是
的中点.连接
.
的度数;
(2)连接
,求证:
;
(3)连接
,若正方形的边长为
,当
最小时,直接写出
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b93dbe5272a5167ff4e2918bec864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c92b5799d12ea37de46d7c942ce7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c92b5799d12ea37de46d7c942ce7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb2cae61c5383a0cba4016e95a9e7dd.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766710dfe704dafaf7f994937cccbad5.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f0ccc8492a0ccf1eee24867060643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8545c7ec378be8ad759c608e16ae9183.png)
更新时间:2024-05-20 18:49:13
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】在
中,
,
,点D是直线AC上一动点,连接BD并延长至点E,使
.过点E作
于点F.
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893759530532864/2894341097979904/STEM/67ce747b-7d61-4809-866e-7ae13fcedbb0.png?resizew=151)
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893759530532864/2894341097979904/STEM/6010123a-7123-4c10-88f0-9141f826fddd.png?resizew=181)
(1)如图1,当点D在线段AC上(点D不与点A和点C重合)时,此时DF与DC的数量关系是______.
(2)如图2,当点D在线段AC的延长线上时,依题意补全图形,并证明:
.
(3)当点D在线段CA的延长线上时,直接用等式表示线段AD,AF,EF之间的数量关系是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5144f280c283f799ae4e51192cdfc38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de4a54cc7818be87a239f6de5f5d05b.png)
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893759530532864/2894341097979904/STEM/67ce747b-7d61-4809-866e-7ae13fcedbb0.png?resizew=151)
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893759530532864/2894341097979904/STEM/6010123a-7123-4c10-88f0-9141f826fddd.png?resizew=181)
(1)如图1,当点D在线段AC上(点D不与点A和点C重合)时,此时DF与DC的数量关系是______.
(2)如图2,当点D在线段AC的延长线上时,依题意补全图形,并证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce1d9c9ea8afb6d8bf32b4c962e1f60.png)
(3)当点D在线段CA的延长线上时,直接用等式表示线段AD,AF,EF之间的数量关系是______.
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893759530532864/2894341097979904/STEM/463dfeb7-523f-40ad-9d9c-2d432b01c599.png?resizew=151)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,
,
是中线,
是
的中点,过点A作
交
的延长线于点
,连接
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/6095bae4840bfa80f2468f94b2002d7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4e363bfd418579e6229230df034bbc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/6/efe98952-735e-4f67-87de-e2061f2ca214.png?resizew=273)
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解答题-作图题
|
适中
(0.65)
【推荐1】如图,在平面直角坐标系中,的顶点
均在小正方形网格的格点上.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/fe38c7b4-3842-4094-b985-82171a37fc66.png?resizew=232)
(1)画出
关于x轴的对称图形
(点A、B、C的对应点分别为
),则
(________)
(________)
(________)
(2)在第二象限内的格点上找点D,连接AD,DB,使得
,并写出点D的坐标.
(3)求出
面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cdc2230b4bab8fc5a0cfc6579af21b3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/fe38c7b4-3842-4094-b985-82171a37fc66.png?resizew=232)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a5a1f585c19f582edbb8cf73c58c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)在第二象限内的格点上找点D,连接AD,DB,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b0c6766bd801fa114221d0ab0bfa61.png)
(3)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbff84327e964f912a54032e76ccc9.png)
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解答题-证明题
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名校
【推荐2】(1)如图1,已知等腰直角三角形中,
,在三角形内取一点
,使得
,
,求
的度数
小明通过挖掘已知条件,获得
,线段
,这样本题就具备了一边一角的图形特征,所以小明果断的在AB上截取
.造出全等三角形,从而便问题得以解决.请按照小明的思路完整解答.求出
的度数
(2)如图2,在四边形
中,
,
,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dfd0c8a7e3c18d4d1dcff7ed1f4975.png)
(3)如图3,在
中,
,
,射线
于点
.若点E,F分别是射线AD,边AC上的动点,
,连接BE,BF,直接写出
最小值______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc13fe21e64d9b45614ed43be847904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65639672f444b3d4dc6fc4f357ddbd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
小明通过挖掘已知条件,获得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b71bcb890651988f62ce5fc175f2457.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9f07a876244afec67a0eca4d45c2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a6574405000dab3fec93b438aa2de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
(2)如图2,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66fb4b302a445eeee3f417005d0b89cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2b50e3fd9854aef7895efd97942f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dbd2d7da467a57af7e17d476ea7a3a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dfd0c8a7e3c18d4d1dcff7ed1f4975.png)
(3)如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1893b7bb1495598db815b6f9ef2dd1c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/0dd6217c-3280-4538-8de3-c11992bfec10.png?resizew=481)
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解答题-证明题
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名校
【推荐1】如图,在四边形
中,
,对角线
平分
,过点C作
,分别交
于点F、E,连接
.
(1)求证:四边形
是菱形;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db8979587bc6f08f43b565745579112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45b04cc3e5adaeff6f9e01e29032803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4cac1926c2875b14ad658b56ac6f113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/5/b3f24037-f80a-4c04-b925-e9d3ba55b914.png?resizew=189)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f6e65aef78954e9e66ccf9e57cf105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
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解答题-证明题
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【推荐2】我们定义对角线互相垂直的四边形叫做垂美四边形.
如图点E是四边形ABCD内一点,已知BE=EC,AE=ED,∠BEC=∠AED=90°,对角线AC与BD交于O点,BD与EC交于点F,AC与ED交于点G.
(1)求证:四边形ABCD是垂美四边形;
(2)猜想四边形ABCD两组对边AB、CD与BC、AD之间的数量关系并说明理由;
(3)若BE=3,AE=4,AB=6,则CD的长为 .
如图点E是四边形ABCD内一点,已知BE=EC,AE=ED,∠BEC=∠AED=90°,对角线AC与BD交于O点,BD与EC交于点F,AC与ED交于点G.
(1)求证:四边形ABCD是垂美四边形;
(2)猜想四边形ABCD两组对边AB、CD与BC、AD之间的数量关系并说明理由;
(3)若BE=3,AE=4,AB=6,则CD的长为 .
![](https://img.xkw.com/dksih/QBM/2021/11/23/2857278137016320/2859080816287744/STEM/05595069-e541-4e83-8c83-a646515c2cba.png)
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解答题-证明题
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名校
【推荐1】如图,O为平行四边形ABCD的对称中心,对角线AC⊥AB,过点O作直线
,分别交AD,BC于E,F,连接AF,CE.
![](https://img.xkw.com/dksih/QBM/2021/11/6/2845452386344960/2848171268366336/STEM/489ac3a6-2a2b-4cb7-b821-de35ad7d4cc6.png)
(1)证明:四边形AFCE是菱形;
(2)若四边形AFCE是正方形且BC=6,求AB的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058f36d315245b63a811d5c6f348c17b.png)
![](https://img.xkw.com/dksih/QBM/2021/11/6/2845452386344960/2848171268366336/STEM/489ac3a6-2a2b-4cb7-b821-de35ad7d4cc6.png)
(1)证明:四边形AFCE是菱形;
(2)若四边形AFCE是正方形且BC=6,求AB的长.
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,在正方形
中有一点P,连接
、
,旋转
到
的位置.
.求阴影部分面积;
(2)若
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2cc5f8cec8c498aa12c99c04e1c97d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c3c8bf858c13b295de56e548116db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83f70e69dca65099b91f61878b1ca27.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83f70e69dca65099b91f61878b1ca27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49954888d029e06d94e7b6b03f1ff09f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fddda9e7f4d7140bf357d76c9e23d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
您最近一年使用:0次