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ruler
Author:
felixchow
菱形
GeoGebra
New Resources
兩組對邊相等的四邊形
拼砌四邊形
柱體建築師
球體建築師
兩組對邊相等和有直角的四邊形
Discover Resources
My second work
圓錐曲線與平行四邊形定理
圆锥截面为圆椭圆双曲线抛物线的动画显示.许兴华数学
地球各緯度的晝長夜長
三阶魔方（magic cube）
Discover Topics
Quadrilaterals
Hyperbola
Intersection
Boxplot
Similarity Transformation or Similarity