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菱形有甚麼特性？
Author:
Anthony OR 柯志明
English version:
http://ggbtu.be/m79847
GeoGebra
New Resources
找出對稱軸
判斷球體
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
錐體建築師
Discover Resources
正方形中點連線及分角線交點連線形狀
交點軌跡動態
二次函数问题
双曲线的定义
圓心在同一直線上且相切的圓(半徑可改變)
Discover Topics
Division
Similarity Transformation or Similarity
Cuboid
Multiplication
Histogram