如图,小明与小颖在
的小正方形网格中画出格点
(格点指小正方形的顶点)小正方形的边长为1.此时,细心的小颖发现利用网格可以提出下列问题,请你帮助小明解答小颖提出的问题:
(1)求
和
的值;
(2)在网格中存在格点
.且
与
不全等,同一位置的格点
只算一个,则符合条件的格点
一共有______个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd4be97adde17423d59d86d18318c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/23/0e48bd8b-a624-460a-93d5-37ca9e2a0fdf.png?resizew=181)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03005d17bf564371ad29fea41f5c650.png)
(2)在网格中存在格点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e685cffae41a4f4c752efd79fb0c3af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](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/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
22-23九年级上·山西阳泉·期末 查看更多[3]
山西省阳泉市山西阳泉经济开发区2022-2023学年九年级上学期期末数学试题山西省阳泉市高新区2022-2023学年九年级上学期期末数学试题(已下线)专题11 锐角三角函数及其运算(十种考法)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(北师大版)
更新时间:2023-07-19 10:22:28
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】在三个
的方格纸内,画与左下方格纸内的已知
相似但不全等的格点三角形,并写出
的相似比.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954253b16a82489bb0e152543428c68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2021/5/6/2715249660780544/2715299846275072/STEM/e303042340d14c54915ce3c62eed0336.png?resizew=554)
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解答题-作图题
|
适中
(0.65)
【推荐2】规定:每个顶点都在格点的三角形叫做格点三角形
如格点
如图
所示
,要求在图
、图
中分别以DE为边画出两个不同的三角形,并且都与图
中的
相似
注:若所画的两个三角形全等,视为同一种
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82e415812cca9545611c0faa0c01b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/2019/4/13/2181664185696256/2183209725083648/STEM/5c73a28a0f8b4e3da9dd3797f2a7725d.png?resizew=470)
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,已知
是矩形
的对角线,
,
交
延长线于
,
交
于
,
交
于
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/dd356ed0-b8a6-4a00-8376-d2fed7856dc8.png?resizew=182)
(1)求证:点
是
的重心;
(2)如果
,求
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105068b25f5a63af32f4082cfe08691e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/dd356ed0-b8a6-4a00-8376-d2fed7856dc8.png?resizew=182)
(1)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9537d8440750624c628430960595992.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a55a1a244f81097e05e715b69580faa.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】
是
的直径,弦
于点
,若
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/1bf77d4e-c1af-4672-b00f-1d75cc86efda.png?resizew=161)
(1)求
的长;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863544b6162ca5c8bc38ade2fc28f8a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/1bf77d4e-c1af-4672-b00f-1d75cc86efda.png?resizew=161)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a14dd0cfda3741deccc80e89b6c2a233.png)
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适中
(0.65)
真题
【推荐1】小明在草稿纸上画了某反比例函数在第二象限内的图像,并把矩形直尺放在上面,如图.
(1)反比例函数表达式;
(2)点C坐标.
(1)反比例函数表达式;
(2)点C坐标.
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解答题-问答题
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适中
(0.65)
【推荐2】在Rt△ABC中,∠C=90°,a、b、c分别是∠A、∠B、∠C的对边,且b=6,tanA=1,求c.
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