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Properties of a Parallelogram
Author:
Lttcmooc
GeoGebra
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算柱 (兩位數)
兩位數除以一位數（二）
兩組對邊相等的四邊形
兩位數除以一位數（一）
異分母分數減法
Discover Resources
錐體建築師 3
判斷球體 6
乘法運算
例子
圓與三角形的中點軌跡
Discover Topics
Linear Equations
Volume
Rotation
Conic Sections
General Quadrilateral