如图,已知等边
,点
为
内的一点,连接
、
、
,
,以
为边向
上方作等边
,连接
(
).
(1)求证:
≌![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbf3ad83cac73ee5024f74c2adc6a5e3.png)
(2)若
,
,则
的面积为 .
(3)若
,
,
(
为大于1的整数).求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b585bcaa51372684683979de3f2774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4b17ce6e90cd3810a3696262e94c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c63f6188a9c2a7892ac8199a4339cf8.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1fc2305fd371a1ff1f91cd834140e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbf3ad83cac73ee5024f74c2adc6a5e3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3503ce2de50dccf30955eda6c8cc090a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e635a5d8aab4f522af962359ab72c65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c921c1911f77f9caf3f8f161dcb2837a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3503ce2de50dccf30955eda6c8cc090a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271a1072a9bce6ab37dd8be4e05de4ab.png)
![](https://img.xkw.com/dksih/QBM/2019/11/27/2342967911710720/2343820830998528/STEM/f2cb3c29667045e58ec3ac0bd370dea4.png?resizew=474)
更新时间:2019-11-28 20:58:35
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图1,在平面直角坐标系中,点O为坐标原点,
的顶点B、C在x轴上(C左B右),点A在y轴正半轴上,
,点O为
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/a9b79875-d7bd-4981-ac3f-55bd6c91b1b0.png?resizew=545)
(1)求点A的坐标;
(2)如图2,点D为
上一点,点F为y轴上一点,
,连接
,
,
交y轴于点E,设线段
的长为t,线段
的长为d,请用含t的式子表示d;
(3)在(2)的条件下,当点D与点C重合时,在
的延长线上取点G,作
交x轴于点K,若
,连接
,过点A作
于点M,求点M的纵坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/a9b79875-d7bd-4981-ac3f-55bd6c91b1b0.png?resizew=545)
(1)求点A的坐标;
(2)如图2,点D为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4e363bfd418579e6229230df034bbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0175d8a8ffcea569a8421c95c1dad2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
(3)在(2)的条件下,当点D与点C重合时,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3ef7619185d1940707859d73adfb1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff1e032f4738630a75b10df9797eead8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5210790f8fdc6e903a3ca1c11d8f44b1.png)
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(0.65)
名校
【推荐2】如图,在
中,
,
,点
是边
上一点,
交
的延长线于点
,点
是
的中点,连接
,
.
(1)求证:
;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f9cb93947d668d2e054348103f8bf3.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/9/5b7de0fd-42fe-4343-90a2-3123ebf25e54.png?resizew=176)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0c85ba0bada0b1206b8097269a9e07.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3458a20ce66e041434e935f6150a806a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70abed7faf55deb24162255c5ad59577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
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适中
(0.65)
真题
【推荐1】在△ABC中,AB=AC,∠BAC=120°,过点C作CD∥AB,且CD=2AB,连接BD,BD=2.求△ABC的面积.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】已知:如图,在四边形
中,
,
平分
交
于点E,
.
为平行四边形;
(2)若
,求证:
;
(3)在(2)的条件下,连接
、
,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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](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/0572087b3cee6f95621a9acc7b3ddedf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32436704a722d5e568ff5c175bf3c662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a6574405000dab3fec93b438aa2de0.png)
(3)在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d6208d2d048bead54d01b744a089ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a2db6311e228ed33b6c71d0a5918cf.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,在平行四边形
中,
平分
,已知
,
,
,
的长;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ff13b4da65c7da3d898ba58e967b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3032820a0d2d50d9143e7923f5936ddf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b1927db96d84f27197b5a654b622f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5fc481f25eed9546f11fde418be5b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
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(0.65)
名校
【推荐2】已知:如图,双曲线y=
(k≠0)与直线y=mx(m≠0)交于A(2,4)、B两点,点D是x轴上一点,C在双曲线上且是AD的中点.
![](https://img.xkw.com/dksih/QBM/2021/9/9/2804600673419264/2804863454887936/STEM/028cf374-e956-4d4f-9f42-144ce7b3f661.png)
(1)求双曲线和直线AB的函数表达式;
(2)连结BC,求△ABC的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
![](https://img.xkw.com/dksih/QBM/2021/9/9/2804600673419264/2804863454887936/STEM/028cf374-e956-4d4f-9f42-144ce7b3f661.png)
(1)求双曲线和直线AB的函数表达式;
(2)连结BC,求△ABC的面积.
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