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畢氏定理
Author:
方酩淇
GeoGebra
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直角坐標平面上的旋轉變換
近似值：有效數字
美國國旗 (Codex 版)
Earth with coastline
sanjiaohanshu
Discover Resources
perimeter
Trigonometric Relations(90,270)
「相似三角形」任务3的副本
圖三 的複本
直纹面单叶
Discover Topics
Subtraction
Means
Perimeter
Logarithmic Functions
Inequalities