如图1,射线OC在
的内部,图中共有3个角:
、
和
,若其中有一个角的度数是另一个角度数的两倍,则称射线OC是
的“定分线”
一个角的平分线______这个角的“定分线”;
填“是”或“不是”![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
如图2,若
,且射线PQ是
的“定分线”,则
______
用含a的代数式表示出所有可能的结果![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
如图2,若
,且射线PQ绕点P从PN位置开始,以每秒
的速度逆时针旋转,当PQ与PN成
时停止旋转,旋转的时间为t秒
同时射线PM绕点P以每秒
的速度逆时针旋转,并与PQ同时停止
当PQ是
的“定分线”时,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b5ab330e9b7a07c526fbdd861fb1ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b5ab330e9b7a07c526fbdd861fb1ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82370110800a9b387da342ca717bdeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2edaf7aabedc5665b91aa77f861a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b5ab330e9b7a07c526fbdd861fb1ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0661d075fcd79e06010fb0518aad59c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/744feab490f7028be68209190d4bbeda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdbe131635828fd813135c138524cfac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da9d13012200a53b47d82b31a7314681.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa796fafa21926d2eead9f250eba52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12d93bd1130088b622602a6c21c9c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02de453a02ce481598c9788518b9524a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/744feab490f7028be68209190d4bbeda.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/dcbccb93-f28f-4768-ada6-76e358e88816.png?resizew=406)
18-19七年级·江苏南通·期末 查看更多[5]
【区级联考】江苏省南通市通州区2018-2019学年七年级(上)期末学业水平质量监测数学试题江苏省南通市通州区2018-2019学年苏科版七年级(上)期末数学试题江苏省无锡市宜兴市桃溪中学2019-2020学年七年级上学期12月月考数学试题江苏省仪征市第三中学2019-2020学年七年级上学期数学月考试题(已下线)七年级上学期期末模拟测试卷02-2023-2024学年七年级数学上学期期中期末考点归纳满分攻略讲练(人教版)
更新时间:2019-03-14 22:23:49
|
【知识点】 几何问题(一元一次方程的应用)解读
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,数轴上有三个点A,B,C,表示的数分别是
,3.
(1)若使C、B两点的距离是A、B两点的距离的2倍,则需将点C向左移动 个单位;
(2)已知:点B和点C同时分别以每秒2个单位长度和3个单位长度的速度向右运动,运动时间为t秒.
①用含t的代数式填空(运动了t秒后,点B和点C分别表示的数):
点B表示的数是 ,点C表示的数是 ;
②当t为多少时,点B与点C之间的距离为12个单位长度?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4f442fa77efaa9d15667a190f459ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/9f31cd60-6261-4341-b901-997daa73f036.png?resizew=343)
(1)若使C、B两点的距离是A、B两点的距离的2倍,则需将点C向左移动 个单位;
(2)已知:点B和点C同时分别以每秒2个单位长度和3个单位长度的速度向右运动,运动时间为t秒.
①用含t的代数式填空(运动了t秒后,点B和点C分别表示的数):
点B表示的数是 ,点C表示的数是 ;
②当t为多少时,点B与点C之间的距离为12个单位长度?请说明理由.
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,已知直线
,
,
分别是
,
上的点,点
在直线
,
内部,且
,
.
(1)求
的度数.
(2)如图2,射线
绕点
以每秒
的速度逆时针旋转,交直线
于点
,设运动时间为
秒(
).当
时,试探究
与
的位置关系,并说明理由.
(3)在(2)中,射线
绕点
同时以每秒
的速度顺时针旋转得到射线
.当
时,请直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.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/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebfe49dd00da43c0a93160096abc558d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba717dbb1f60a5b81d694e7c6b7a61e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d6902c8862bd2616be038549f77aff.png)
(2)如图2,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8b62dc033d86ee9e561b8903796701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e191a233da08a8840990ced95a6cc718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ff33e126bf9c128ad9f66953b0b077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c417cbf5825b30290075bb676fc7d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6cd332590b9eb4032b51a39134d219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af83aa2410d6ab5d74a984b8fd745cbc.png)
(3)在(2)中,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da1c094648e6344416cdb2bbbf8c61f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8e93ad6b96441fae19ed2c713aae98a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3813af7aaedf65ca4848c3476f29c8a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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