名校
1 . 如图,
,点D在
边上,
相交于点O.
;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ca46e6880ca1d9fd6b201177f2a499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e25c45921825557af1506b4a9e634835.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86a8e539b94983e682e37ac705c0fa8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54eb639802989aa4b8e541734ec00f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a55a1a244f81097e05e715b69580faa.png)
您最近一年使用:0次
2023-10-29更新
|
272次组卷
|
27卷引用:四川省达州市2021-2022学年七年级下学期5月教学质量调研联考数学试题
四川省达州市2021-2022学年七年级下学期5月教学质量调研联考数学试题山东省泰安市宁阳县第十一中学2022-2023学年七年级上学期9月月考数学试题山东省泰安市宁阳县第十一中学2022-2023学年七年级上学期9月月考数学试题河北省邯郸市临漳县2020-2021学年七年级下学期期末数学试题福建省福州第四十中学2022-2023学年八年级上学期开学考数学试卷江苏省连云港市实验学校2022-2023学年八年级上学期第一次月考数学试题(已下线)江苏省连云港市海州区新海实验中学2022-2023学年八年级上学期第一次月考数学试题(已下线)专题4.13 探索三角形全等的条件(ASA和AAS)(知识讲解)-2022-2023学年七年级数学下册基础知识专项讲练(北师大版)江苏省连云港市赣榆区实验中学2022-2023学年八年级上学期第一阶段水平检测数学试题福建省福州市平潭翰英中学2022-2023学年八年级上学期开学测试数学试题福建省福州第四十中学2022-2023学年八年级上学期开学考试数学试题福建省福州市仓山区福州第四十中学2022-2023学年八年级上学期开学考试数学试题第4章 3 课时2 角边角、角角边山东省菏泽市曹县2019-2020学年八年级上学期期末数学试题2020年陕西省宝鸡市中考数学三月模拟试题福建省福州市平潭城南学校2020-2021学年八年级上学期第一次阶段性测试数学试题山东省济宁市嘉祥县2021-2022学年八年级上学期10月月考数学试题湖北省天门市七校联考2021-2022学年八年级上学期期中考试数学试题(普)黑龙江省齐齐哈尔市讷河市2021-2022学年八年级上学期期中数学试题广东省惠州市华侨中学2023-2024学年八年级上学期第一次月考数学试题福建省莆田市仙游县郊尾、枫亭、盖尾初中教研小片区2023-2024学年八年级上学期第一次月考数学试题辽宁省辽阳市第一中学2023-2024学年八年级上学期第一次质量检测数学(西藏班)试题内蒙古自治区呼伦贝尔市莫力达瓦达斡尔族自治旗莫力达瓦达斡尔族自治旗达斡尔中学2023-2024学年八年级上学期期中数学试题广东省惠州市惠城区华侨中学2023-2024学年八年级上学期月考数学试题辽宁省鞍山市海城市第二中学2023-2024学年八年级上学期第一次质量检测数学试题(已下线)清单02 全等三角形的判定(9种题型解读(35题))-2023-2024学年八年级数学上学期期末考点大串讲(苏科版)江苏省宿迁市2023-2024学年八年级上学期10月月考数学试题
2 . 如图,在四边形
中,
,
,连接
,
.当
时,
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88fcb0a9670eb5925ad093f335ac3bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79dc12cb2993cd6ccfa4111c462b899f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989c75a3fd02e4971cab421c88de92f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f17c3c690027786e9021ba60aaa5a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96c53bb9ebda26b41cec5647a93a4b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbe2600e69156e93284c91d4d6377a2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/a8b25df0-c2fc-4ff7-9177-190cea58be09.jpg?resizew=149)
您最近一年使用:0次
3 . 如图,在
中,点D为
边上一点,
,延长
到点E,使得
,恰有
,连接
,交
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/3bf2ffe8-7cb5-4a2d-802f-21bd7df4fe80.jpg?resizew=137)
(1)求证:
;
(2)当
时,
(i)求证:
;
(ii)求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56fdbe6793c61ddb43f9175ff2b42be4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c7f622fd6ebb3b8e4c0555f51cc1ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/485860b5c52472e46b40d7e6609146b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/3bf2ffe8-7cb5-4a2d-802f-21bd7df4fe80.jpg?resizew=137)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c7d68aa6b7a6a98dfc11de632c1c7a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4999d4fbcbe15f78c29d518f25d317c2.png)
(i)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7dd1b390c5d731d81b016ce8734eea.png)
(ii)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4598486f8c5ac28b1165b76e78105979.png)
您最近一年使用:0次
4 . 如图,如图,
,过
的中点O作直线
交
的延长线于E,交
的延长线于F,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f7e352a9eabdbec2ef5fa0b3bc870e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf2e3236ea30ee2c37928b98041f13a.png)
您最近一年使用:0次
2023-01-31更新
|
202次组卷
|
4卷引用:四川省广元市广元外国语学校2021-2022学年七年级下学期期中数学试题
名校
5 . 已知
和
,
,
,
.连接
、
,过点
作
于点
,反向延长线段
交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/9a65a0a0-d502-4927-955c-8121cacf56eb.png?resizew=337)
(1)如图1,当
时
请直接写出
与
的数量关系:____________(填“
”、“
”、“
”)
求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdf028fe99ef03912cd28f0806fdcc94.png)
(2)如图2,当
时,上述![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
结论是否仍然成立?若成立,请证明;若不成立,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f302a858828fef1d2b1323fbb6ffed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ab4bf86fe0ed4bbc4c9e00c5d838ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/9a65a0a0-d502-4927-955c-8121cacf56eb.png?resizew=337)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7942da6c3fc4005256fb1458557c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7081ac76e5ac1e22e848eec143578f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdf028fe99ef03912cd28f0806fdcc94.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c06e36ec59fa93ac857e35796a4b8311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
您最近一年使用:0次
2023-01-10更新
|
192次组卷
|
7卷引用:四川省成都市七中育才学校2021-2022学年七年级下学期期中数学试题
四川省成都市七中育才学校2021-2022学年七年级下学期期中数学试题(已下线)专题13 一线三等角模型证全等-【微专题】2022-2023学年八年级数学上册常考点微专题提分精练(人教版)河北省石家庄市第二十八中学2022-2023学年八年级上学期期中考试数学试题(已下线)专题21 一线三等角模型证全等-【微专题】2022-2023学年七年级数学下册常考点微专题提分精练(北师大版)(已下线)难点特训(三)和三角形综合有关的压轴大题-【微专题】2022-2023学年七年级数学下册常考点微专题提分精练(北师大版)(已下线)专题08 全等三角形证明方法 一线三等角模型【考点串讲+热点题型专训】-2022-2023学年七年级数学下学期期中期末考点大串讲(北师大版)内蒙古自治区呼伦贝尔市莫力达瓦达斡尔族自治旗莫力达瓦达斡尔族自治旗达斡尔中学2023-2024学年八年级上学期期中数学试题
6 . 已知:在
中,
是
边上的中点,
,垂足为
,
与
交于点
,
与
交于点
,过点
作
与
的延长线交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/c453ad6c-d6ba-4dba-a511-f32655f19cce.png?resizew=163)
(1)求证:
;
(2)若
,求
的长.
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3efffb3e6a571832b723b3c5795b8e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5c72449a461d10ec2bfae6e08b82c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/c453ad6c-d6ba-4dba-a511-f32655f19cce.png?resizew=163)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f28d5f302d6614b5c74031c4d22120d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3026fe2f099a305c6061995fbc42437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次
7 . 如图,AD 是△ABC 的角平分线,DE⊥AC,垂足为 E,
交 ED 的延长线于点 F,若 BC 恰好平分∠ABF.下 列结论:①DE=DF;②DB=DC;③AD⊥BC,其中正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/6/21/3005987444350976/3079741591248896/STEM/be1816fdafdc4abc843584d7100882bb.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/889dcbfc08c41d72db173d5ed7bf9050.png)
![](https://img.xkw.com/dksih/QBM/2022/6/21/3005987444350976/3079741591248896/STEM/be1816fdafdc4abc843584d7100882bb.png?resizew=138)
A.①② | B.①③ | C.②③ | D.①②③ |
您最近一年使用:0次
2022-10-03更新
|
193次组卷
|
2卷引用:四川省达州市渠县第二中学2021-2022学年七年级下学期6月月考数学试题
8 . 如图,
与
为等腰直角三角形,
,
,
,
,连接
、
.
,若
,
,求
的度数;
(2)如图
,若
、
、
三点共线,
与
交于点
,且
,
,求
的面积;
(3)如图
,
与
的延长线交于点
,若
,延长
与
交于点
,在
上有一点
且
,连接
,请猜想
、
、
之间的数量关系并证明你的猜想.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41663d9e5e18891475aeaa98794f33d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc75953bf5dcfa4af308c34bf9952d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37685aef034146601b35ae8a4525258b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38a8ee575ca2160f8c7c8ea9c1156de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856e7248f3081e3c56eeb2007de8c999.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65639672f444b3d4dc6fc4f357ddbd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989a0bcbd30800113a2292c753570503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6beda2518cf76da94d7ec9a813dcfa82.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f0a738c3ad8856e2cd6061f862fc7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4ab7e657f01bdfa235f8c4d6681d13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00a1a69f66824f925a37fdce1913063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d567bdeba9b8e17d0911f594e141eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d567bdeba9b8e17d0911f594e141eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
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2022-10-02更新
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623次组卷
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4卷引用:四川省成都市天府新区四川师大附属第一实验中学2021-2022学年七年级下学期期中数学试题
四川省成都市天府新区四川师大附属第一实验中学2021-2022学年七年级下学期期中数学试题(已下线)难点特训(三)和三角形综合有关的压轴大题-【微专题】2022-2023学年七年级数学下册常考点微专题提分精练(北师大版)(已下线)期中押题预测卷(一)(考试范围:第1-4章)-2022-2023学年七年级数学下册重难题型全归纳及技巧提升专项精练(北师大版)(已下线)第一章第08讲 模型构建专题:“手拉手”模型——共顶点的等腰三角形(3类热点题型讲练)-【帮课堂】2023-2024学年八年级数学下册同步学与练(北师大版)
9 . (1)如图
,
,
,
,
,
,求
的长度.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/b15ab9c6-159c-4a35-8056-7ab525cbad82.png?resizew=572)
(2)如图
,
,
,
,探索
、
、
的数量关系,并证明.
(3)如图
,在
中,
,
,
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d79d57c1ff76f539121b2167897248c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7faabc484ce3666706c1beffda4bcfe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beba9c5993784964af81ec070b168456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7cbfaec1d9dcaaf159b060163436113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/b15ab9c6-159c-4a35-8056-7ab525cbad82.png?resizew=572)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9861a559455ee7b30d247ea2e0147687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7faabc484ce3666706c1beffda4bcfe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340f952eb8e71cab6ea6e525a6cf5f9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83da4fc72ea219e514566d4c190b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810242c9205006b28c6bc6612c2b1cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
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10 . 如图,
,
,
,
在同一条直线上,AC
EF,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/4/e59a1240-64a8-44fa-9aaf-22ed700f7c87.png?resizew=270)
(1)求证:AB
DC.
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/c4e6f5241f614c7d310cbf3e25a6d615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb27272b4eb9ed057dd3b4d40697e7c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/4/e59a1240-64a8-44fa-9aaf-22ed700f7c87.png?resizew=270)
(1)求证:AB
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d1cbd48054865bf9b26712853e10c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746bd14f240b382ddf0214f69d89ddbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次