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平行四邊形與三角形
Author:
李春培
Topic:
Area
平行四邊形與三角形
GeoGebra
New Resources
兩位數除以一位數（二）
球体的体积推导
空间中两直线的位置关系
漂亮的摇摆曲线
垂直線的斜率
Discover Resources
平行四邊形和長方形的大小
一次函數圖形
Parabola_Vertical
教學媒體
Copy of Triangular Number
Discover Topics
Hyperbola
Conic Sections
Histogram
Translation
Addition