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Add and subtract (binary) 2
Author:
Ku, Yin Bon (Albert)
GeoGebra
New Resources
直角坐標平面上的旋轉變換
畫出對稱圖形
算柱 (兩位數)
三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
Discover Resources
橢圓
百葉窗
馬字歌
垂線作圖
对角线互相垂直的四边形，证倍分关系的副本
Discover Topics
Combinatorics
Set Theory
Coordinates
Mode
Polynomial Functions