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周界(2)
Author:
Kenneth Wong
GeoGebra
New Resources
平行線的判定
盈利與虧蝕
斐波那契螺旋弧线(表格法-可动态调节)
GeoGebra数学资源(4-8年级)
撒针估算面积实验
Discover Resources
迭代出根號n螺旋線
三角形
Q5
图形的放大与缩小.许兴华数学
平面向量基本定理
Discover Topics
Fractions
Similarity Transformation or Similarity
Arithmetic
Ellipse
Logic