1 . 我国汉代数学家赵爽为了证明勾股定理,创造了一幅“勾股圆方图”,后人称其为“赵爽弦图”,类比赵爽弦图,用3个全等的小三角形拼成了如图所示的等边
,若
,则AC=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5268cbae6d1747a16bdf3302c597c4a.png)
A.8 | B.7 | C.6 | D.5 |
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2023-04-15更新
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8卷引用:湖北省武汉市5G联合体2022-2023学年高一下学期期中联考数学试题
2 . 尺规作图三等分角是古希腊三大几何难题之一,现今已证明该问题无解.但借助有刻度的直尺、其他曲线等,可将一个角三等分.古希腊数学家帕普斯曾提出以下作法:如图,以
的顶点C为圆心作圆交角的两边于A,B两点;取线段
三等分点O,D;以B为焦点,A,D为顶点作双曲线,与圆弧
交于点E,连接
,则
.若图中
交
于点P,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/10/95028fa5-aad7-425e-b022-18edd9f8d726.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787295613dd177b84cacb878e1e6debc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c69b7caf58f96b933b43f9dd995cbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62202b21dbdb69c2c01063fbcb7125bf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/10/95028fa5-aad7-425e-b022-18edd9f8d726.png?resizew=169)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-05-08更新
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5卷引用:山东省烟台市2023届高考适应性练习(一)数学试题
山东省烟台市2023届高考适应性练习(一)数学试题(已下线)模块二 专题1 解三角形与平面向量福建省厦门外国语学校2023届高三适应性考试数学试题(已下线)模块二 情境9 经典数学问题山东省枣庄市2023届高三三模数学试题
解题方法
3 . 欧几里得在《几何原本》中,以基本定义、公设和公理作为全书推理的出发点.其中第
命题
是著名的毕达哥拉斯定理(勾股定理),书中给出了一种证明思路:如图,
中,
,四边形
、
、
都是正方形,
于点
,交
于点
.先证明
与
全等,继而得到矩形
与正方形
面积相等;同理可得到矩形
与正方形
面积相等;进一步定理得证.在该图中,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5daba050b7d206828eb9f8708c55c2d0.png)
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/d7f19d06-3b34-4279-9ba7-e29a08e94377.png?resizew=183)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26054bdb136bc2e874a6a6cb2b8e34b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63471494ced978d1fc9099de448c03ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7281b641656a5992abaafb4190ca9afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d13f001c04c8af4ae17d22f61e495a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a639f1cd639c846012df4a07caf131c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7a0bfc593a8a33b6cade6ba213904c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf194e8909403c0adf2f95f60e7f4ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91aff7b6e37f06ab1eea4d2b8d0adb3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d85269f86a8fec5fcc5a26ef300f02cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a639f1cd639c846012df4a07caf131c9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7a0bfc593a8a33b6cade6ba213904c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aecf70408ab8154ad1b1f88bca72aa3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5daba050b7d206828eb9f8708c55c2d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3288da1bb551b3293db9b7ebebdbe64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/d7f19d06-3b34-4279-9ba7-e29a08e94377.png?resizew=183)
A.![]() | B.![]() | C.![]() | D.![]() |
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