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多邊形的伸縮
Author:
rachmaninoff
GeoGebra
New Resources
錐體建築師
判斷球體
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
柱體建築師
Discover Resources
http://www.qsir.org/?p=8853
四邊形面積問題
幾何塗色
cicle
双曲线的定义.许兴华数学
Discover Topics
Circumcircle or Circumscribed Circle
Pie Chart or Circle Chart
Histogram
Addition
General Quadrilateral