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用心包裝的禮物
Author:
李春培
用心包裝的禮物
GeoGebra
New Resources
異分母分數減法
判斷球體
兩位數除以一位數（二）
算柱 (兩位數)
兩組對邊相等的四邊形
Discover Resources
peacock
三棱锥的三视图
兩線段和圓3
有趣的梯形面積問題
推移（x 方向）的副本
Discover Topics
Angles
Curve Sketching
Trigonometric Functions
Vectors 2D (Two-Dimensional)
Secant Line or Secant