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綄脜:?棊寮鱣????F????嚯禳??桎?螄???袀???噛?Ⅻ???倓???????????蠚???????創??????镽暏嫻????途????嵤?遤酿铝??惜?????蔠湛???????拢??鎎?刭????找揈?????????潤?????鑂?馼晸??????潱?????堠轋D萵????蛫劄???顮?????婐┽??????跣???夥?暴椉朝弶羒???????
綄?:???????F????嚯禳??桎?螄???袀???噛?Ⅻ???倓???????????蠚???????創??????镽暏嫻????途????嵤?遤酿铝??惜?????蔠湛???????拢??鎎?刭????找揈?????????潤?????鑂?馼晸??????潱?????堠轋D萵????蛫劄???顮?????婐┽??????跣???夥?暴椉朝弶羒???????
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\* MERGEFORMAT 4 第1讲 勾股定理(K-X-C-C)【一】勾股定理的证明过程(不唯一)【二】常见勾股数及其构造方法1:勾三股四弦五,即,扩倍同样成立,如2:寻找规律: 原理:平方差公式即:3:练习题目(图不标准,看数据)4:勾股定理的内容应用(开方不是整数的勾股定理)(1)求问号处是几 (2)换个问法: ①第8个直角三角形的斜边是多少? ②一直螺旋下去,第几个直角三角形斜边长
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