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七巧板奔人2
Author:
李春培
七巧板奔人2
GeoGebra
New Resources
異分母分數減法
算柱 (兩位數)
三位數除以一位數（二）
畫出對稱圖形
兩組對邊相等的四邊形
Discover Resources
P.4 對稱
三角函數的由來
speed
橢圓截圓錐
数矩形个数
Discover Topics
Ratios
Fractions
Tangent Line or Tangent
Geometric Transformations
Secant Line or Secant