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這好難用
Author:
ray10430157
GeoGebra
New Resources
拼砌四邊形
四邉形 (四年級) 教師版
找出對稱軸
三位數除以一位數（一）
直角坐標平面上的旋轉變換
Discover Resources
向量的垂直分解
Angle of Elevation & Angle of Depression 仰角和俯角
複合圖形體積(三角形與四邊形結合)
Flips
錐體體積圖解
Discover Topics
Normal Distribution
Piecewise Functions
Secant Line or Secant
Vectors 2D (Two-Dimensional)
Angles