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正十七邊形
Author:
vinnyya
GeoGebra
New Resources
滚动系列
繪畫梯形
已知長方形周界和長求闊
小正方体堆积的三视图
勒洛四面体（参数曲面法）
Discover Resources
IMO2014C
Hoehn's Theorem
勝者即正義
轨迹方程
纏繞畫
Discover Topics
Complex Numbers
Orthocenter
Rhombus
Derivative
Arithmetic Operations