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平行四邊形
Author:
Yip Chi Wai
Topic:
Parallelogram
GeoGebra
New Resources
兩組對邊相等的四邊形
找出對稱軸
錐體建築師
三位數除以一位數（一）
第八周作业
Discover Resources
Triangular Number 三角形數
東興題目的標準圖
quadrilaterals 3
平行四邊形
三節棍1060317
Discover Topics
Addition
Mathematics
Cube
Similar Triangles
Cylinder