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直角三角形の三角比
Author:
Tatsuki Fujimoto
,
+x sir
GeoGebra
New Resources
畫出對稱圖形
錐體建築師
兩位數除以一位數（一）
三位數除以一位數（一）
兩組對邊相等的四邊形
Discover Resources
畢氏定理
Liu Hui's Method of Finding π
二次曲線-2.拋物線
黃金三角形
可翻轉的七巧板
折纸角度探究1
Discover Topics
Median Line
Dilation
Numbers
Set Theory
Parametric Curves