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圆柱侧面椭圆截面展开
Author:
朱亮
GeoGebra
New Resources
平行線的判定
比較五件物件的重量
斐波那契螺旋弧线（表格法-可动态调节）
双心四边形
科氏力 (Coriolis Force)
Discover Resources
謝爾賓斯基三角形
半圓柱(可改底面圓半徑、柱高)
Epicycloid
蚂蚁爬行最短距离问题的副本
立體旋轉卡片
Discover Topics
Secant Line or Secant
Diagrams
Terms
Orthocenter
Algebra