1 . 如图,直线
,直线l与直线a,b分别交于点A,B,点C在直线b上,且
.若
,则
的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc8444d63d1ca92651c62fe9b220859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de29863745ee5013f270961735a31837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
2 . 如图,点
,
,
,
在同一条直线上,
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
,
.求证:
.
(注:几何语言需要注明每一步的推理依据)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42218a68301d770accaaefb96b19f8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6161f83de4045c755d49dc28cbf2fca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32ac820e9ab572690649f16b87aa273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5787c784b686435a2073bdeb836307c.png)
(注:几何语言需要注明每一步的推理依据)
您最近一年使用:0次
3 . 下列命题中是真命题的是( )
A.过一点有且只有一条直线与已知直线平行 |
B.两条直线被第三条直线所截,同位角相等 |
C.连接直线外一点与直线上各点的所有线段中,垂线段最短 |
D.有理数和数轴上的点是一一对应的 |
您最近一年使用:0次
2024七年级下·上海·专题练习
4 . 如图:两条平行直线
、
直线
所截,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2c072ff1f148536962177b3bd45d63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/664dbc51f0840274ecc8cfe344f4ea3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次
名校
5 . 如图,在
中,
,
是角平分线,
是高,
与
相交于点
,
,求
的度数.
是高(已知),
______(三角形高的定义)
在
中,
______°(______ )
是角平分线,
______=______(角平分线定义),
是
的外角,
______=______°
∵
(已知)
______=______°(______ )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212f21a0f752af918bca61273cba8b8b.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75083848b4496b91ddd183a167e6bc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384da7acfefa7c656eaca2df173f0cb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc12dbfa29bc61b3f0d930f59f94458.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8a001fbe13df4c2a7cdd92176cbc0d6.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6818a98204f62c1b16699d26ca0c3f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa16741db62319287af08810ec652c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d558048f4591f82e669ae89e20ebc082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19423301caba98c11758577ef169fed7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc575b2e16733e3f5fee8d1d51c3398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca932a59ba9a316cc74d769837bc7f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33d2a3a59a422151c3aca1f39b290e.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75083848b4496b91ddd183a167e6bc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecb3a978b688eb94b180bfbeecf691a3.png)
您最近一年使用:0次
2024-05-17更新
|
120次组卷
|
2卷引用:河北省石家庄外国语学校2023-2024学年七年级下学期期中数学试题
6 . 已知
,点
在射线
上,点
在
外部,
,以
为顶点,
为一边,大小为
的角的另一边交射线
于点
.
与点
位于
所在直线异侧时,
的平分线与射线
的交点为点
.补全图形并直接写出直线
与直线
的位置关系;
(2)当点
与点
位于
所在直线同侧时,射线
与射线
交于点
,点
在线段
的延长线上.
①如图2,若
平分
,求证:
平分
;
②当
时,直接写出
的度数并画出符合题意的图形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b040b8f31984e8fec17e5541e312f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb780c38866c437ef52b2a9f7d508a0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9608ff5864cf9a7b4d30eafde59150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9568c5bbb7143f6a02afb96538cb8597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb780c38866c437ef52b2a9f7d508a0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9608ff5864cf9a7b4d30eafde59150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a473e2b422c780bf7be36c856864995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
①如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a037c23a11c7783b1b44988c21634f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c3ca226db5d490fa92bb1b7c8deb14.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a69f6a208dd6671c46271b78430d79b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
7 . 如图,直线
,
于点
,若
,则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a166225f9ada66c353e21ee2262d42c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-05-16更新
|
90次组卷
|
2卷引用:山西省太原市第三十七中学校2023-2024学年七年级下学期月考数学试题
8 . 下列命题中,是真命题的是( )
A.对顶角相等 | B.无限小数是无理数 |
C.同位角相等 | D.负数的平方根为负数 |
您最近一年使用:0次
9 . 下列命题中是真命题的是( ).
A.同位角相等 |
B.立方根是本身的数是0 |
C.相等的角是对顶角 |
D.经过直线外一点,有且只有一条直线与这条直线平行 |
您最近一年使用:0次
10 . 下列说法中正确的是( )
A.相等的角是对顶角 |
B.两条直线被第三条直线所截,同位角相等 |
C.两点之间直线最短 |
D.在同一平面内,过一点有且只有一条直线与已知直线垂直 |
您最近一年使用:0次