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radius of the earth 1
Author:
kidmancmw
GeoGebra
New Resources
三角函数 的副本
第八周作业3
斐波那契螺旋弧线（表格法-可动态调节）
撒针估算面积实验
平行線的判定
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Bricks
科學記號
(004)80201辛宇婕
旋轉+伸縮正多邊形
拋物線有範圍限制的極值
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Orthocenter
Parabola
Geometric Transformations
Addition
Limits