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圆的展开与计算
Author:
九章算术
GeoGebra
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活动三：应用性质
科氏力 (Coriolis Force)
斐波那契螺旋弧线（表格法）
百分數及其應用
三角函数 的副本
Discover Resources
國中數學
從到兩邊等距的點
How to draw a hexagon with ruler and compasses?
Slope
中國火柴遊戲一
Discover Topics
Numbers
Percentages
Logarithmic Functions
Rhombus
Division