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劉徽的「割圓術」
Author:
wong wai man
,
Anthony OR 柯志明
GeoGebra
New Resources
球体的体积推导（优化版）
找出對稱軸
判斷球體
四邊形的特性
畫出對稱圖形
Discover Resources
三线八角
二元一次不等式
密铺图形
橢圓3--平行四邊形法
一位数加减法运算自我测评
Discover Topics
Subtraction
Geometric Mean
Isosceles Triangles
Square
Upper and Lower Sum or Riemann Sum