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Parallelogram
Author:
Chu Siu Hin
New Resources
兩組對邊相等的四邊形
【案例】圆柱体内放置一个大球六个小球
判斷球體
兩位數除以一位數（一）
柱體建築師
Discover Resources
Quiz on Addition and Subtraction of Directed Numbers (1) 有向數加減測驗(1)
封閉圖形填顏色
正三角形
三角形分類
椭圆的定义
Discover Topics
Polynomial Functions
Addition
Line Segment
Vectors 3D (Three-Dimensional)
Difference and Slope