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Copy of Triangular Number
Author:
Ronan Downes
,
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
兩組對邊相等的四邊形
第八周作业
拼砌四邊形
球体的体积推导（优化版）
【案例】圆柱体内放置一个大球六个小球
Discover Resources
Jiawen Yun
黎曼和
大圓在小圓上滾動(利用Affineratio指令)
S2,3,5 Statistics
軌跡練習1
Discover Topics
Similarity Transformation or Similarity
Conic Sections
Median Value
Triangles
Equilateral Triangles