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梯形
Author:
Yip Chi Wai
Topic:
Trapezoid
GeoGebra
New Resources
兩位數除以一位數（二）
錐體建築師
拼砌四邊形
判斷球體
三位數除以一位數（一）
Discover Resources
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封閉圖形的斜線區域
不規則圖形的周界(step3)
tool1
异面直线立方体
Discover Topics
Geometric Mean
Optimization Problems
Scalene Triangles
Difference and Slope
Parabola