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毕氏螺线
Author:
夜雨嘀嗒
GeoGebra
New Resources
折扣
常见四边形是否是双心四边形
撒针估算面积实验
斐波那契螺旋弧线（表格法-可动态调节）
活动三：应用性质
Discover Resources
Problem 1
Surface area of sphere
ggggggg
封閉著色2
圓周公式應用題2的副本
Discover Topics
Sphere
Diagrams
Integral Calculus
Line Segment
Statistics