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平行四邊形
Author:
Yip Chi Wai
Topic:
Parallelogram
GeoGebra
New Resources
拼砌四邊形
四邉形 (四年級) 教師版
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
Discover Resources
作業
滑桿動畫基礎
切割正立方體
Copy of 拉格朗日插值多項式
鉛筆畫圓
Discover Topics
Continuity
Median Value
Fractions
Area
Vectors