已知:直线
、
相交于点
.
(1)如图1,
,求
的度数.
(2)如图2,射线
、
在直线
的上方,且
,作
平分
,求
与
的数量关系.
(3)如图3,在(2)的条件下,当
于
,在
下方作
于
,射线
在
的内部,
平分
,若
,
,求
的度数.
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/20/15cf6234-bebc-4c5b-a4e5-67bb4a009c81.png?resizew=656)
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7465bb5ec9520611e4b9fd18afde4e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
(2)如图2,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d8582e37697e7dac44f4960bd19970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1b56adca869969e1dd85a5a4ea4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
(3)如图3,在(2)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ebef5bab02280cdc99cc7f689135cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16205310fc462eed553f3618c81e14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad6ed7b363dce0e5f2a05b5ec996c3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f5dc1d043a4909a40238ff5b590c77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c99fc27014843727f323b55dc027bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7b309126559f1afe4c136099ea2b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecd5c0de3f9a56ee0e628487548437.png)
23-24七年级上·黑龙江哈尔滨·阶段练习 查看更多[4]
黑龙江省哈尔滨市第十七中学校2023-2024学年七年级上学期月考数学试题(已下线)第09讲 直线的相交(10大题型)-【帮课堂】2023-2024学年七年级数学上册同步学与练(浙教版)(已下线)专题6.23 平行与垂直(分层练习)(提升练)-2023-2024学年七年级数学上册基础知识专项突破讲与练(苏科版)(已下线)专题5.2 相交线与垂线(分层练习)-2023-2024学年七年级数学下册基础知识专项突破讲与练(人教版)
更新时间:2023-10-19 08:42:12
|
相似题推荐
解答题-问答题
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适中
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【推荐2】如图,已知
内部有两条射线
,
,
平分
,
平分
,
,
的度数分别为
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/975cbc21-3940-414d-ae5a-96c148593e61.png?resizew=186)
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【推荐2】把下列的推理过程补充完整,并在括号里填上推理的依据:
如图,
,
,
是
的角平分线.
试说明:
解:
是
的角平分线,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
(①___________),
又![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
(已知),
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
(②___________),
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
③___________(④___________),
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
⑤___________
(⑥___________),
又![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
(已知),
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
(⑦___________),
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
(⑧___________).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/10/7bb9d2c3-c413-426f-bb8f-f35d88829a5b.png?resizew=153)
如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0f86566770c9a240ebef8bd232cc9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc3845d73e9272f20b877167895e197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
试说明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cad97dd9d9593fa01342550aba6ec47.png)
解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f85f511236e5645290b9d06984558ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0f86566770c9a240ebef8bd232cc9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13727d8a0e06c867d52becf77be8704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc521258fcaeaf7acffc5ae98c3af6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564c5a21b1397c74009a0cc3aaeb113c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e519cdb0cac3981d8e9610dba507a3.png)
又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc3845d73e9272f20b877167895e197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e2d131cf4bd2f1aa71bcd23bf96534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cad97dd9d9593fa01342550aba6ec47.png)
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【推荐3】实践与探究
材料:一副直角三角尺,记作:
和
,其中
,
,
.
(1)操作一:如图①,将三角尺按如图方摆放,其中点C、D、A、F在同一条直线上,另两条直角边所在的直线分别为
、
,
与
相交于点O,则
的大小为 度.
(2)操作二:保持
、
不变,将图①中的三角尺经过适当平移旋转,得到的位置如图②所示,点B在
上,点F在
上,点A与点E重合,点C与点D重合,且
平分
,求
的度数.
(3)操作三:如图③,将图①位置的三角尺
绕点B顺时针旋转一周,速度为每秒
,设运动时间为t秒,当边
与
互相平行时,直接写出t的值.
材料:一副直角三角尺,记作:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e039c97516a7adb1767f635196c1a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6618b4d41917e695da2356c016242ba4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/25/e4e09065-6d9b-42dd-980f-1abab0f828ad.png?resizew=649)
(1)操作一:如图①,将三角尺按如图方摆放,其中点C、D、A、F在同一条直线上,另两条直角边所在的直线分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7307ac7510cf35f74337d368b94da4e5.png)
(2)操作二:保持
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91471da4a77df63164169d4858666563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264aa8b570792477b769444ea2aea67f.png)
(3)操作三:如图③,将图①位置的三角尺
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb0aa8a61380228e285f3b5c7b74c47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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【推荐2】将一副三角板的直角顶点重合按图①方式摆放,图②是依据图①而作出的几何图形,试依据图②回答下列问题.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/ca630d14-03bb-4da6-9a39-827f22a47547.png?resizew=268)
(1)若
,求
度数;
(2)设
,
,试探究
、
之间的数量关系,并说明理由;
(3)请探究
与
之间有何数量关系?直接写出你的结论.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/ca630d14-03bb-4da6-9a39-827f22a47547.png?resizew=268)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ad9b1e635979596375d8b804de3216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a2db6311e228ed33b6c71d0a5918cf.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec66384de001ccfd86e935ddcfe1033d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fda417f76d5d53924315ae20222edd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(3)请探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1384d0a02d097ac7aa8a19e8da6f9767.png)
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【推荐2】如图,直线AB和CD交于点
,OE平分
.
![](https://img.xkw.com/dksih/QBM/2020/5/16/2464161228554240/2464748056797184/STEM/9d3c8c6e7df541d0a77d7b088f931750.png?resizew=314)
(1)在
内部,过点
作射线
;
(2)在(1)的条件下,若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bea7b811fa609b8e92da877471564e07.png)
![](https://img.xkw.com/dksih/QBM/2020/5/16/2464161228554240/2464748056797184/STEM/9d3c8c6e7df541d0a77d7b088f931750.png?resizew=314)
(1)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60380ca89b244ae59af6551b5fdf25be.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8168a7ae55fa437d0308cf7b7222fd63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843adec8fba1741ccb81a9017cfb815f.png)
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