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Properties of a Parallelogram
Author:
Lttcmooc
GeoGebra
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三位數除以一位數（二）
四邊形的特性
兩組對邊相等的四邊形
球體建築師
錐體建築師
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下和
尋找等腰三角形 Isosceles Triangle Hunt
Sierpinski 分形
七巧板的副本
S3 Ex4.3 Q04(3D圖)
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Scatter Plot
Natural Numbers
Volume
Constructions
Fractal Geometry