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堑堵 鳖臑 阳马
Author:
孟宝兴
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數除以一位數（二）
找出對稱軸
球體建築師
四邉形 (四年級) 教師版
Discover Resources
七巧板貓咪2
特別角的三角函數值(2)
題F
正四角錐(旋轉，實體、透視)
y=asin(bx+theta)+c
Discover Topics
Sine
Square
Multiplication
Volume
Secant Line or Secant