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人教版八上，勾股定理螺线（毕氏螺线 ）
Author:
刘护灵
GeoGebra
New Resources
斐波那契螺旋弧线（表格法）
比較五件物件的重量
异形操场
百分數及其應用
盈利與虧蝕
Discover Resources
Reflection
正五角錐(旋轉，實體、透視)
垂直線(方格版)
Copy of angle between line and plane
圆锥曲线
Discover Topics
General Quadrilateral
Integral Calculus
Congruence
Right Triangles
Numbers