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长沙2019
Author:
谢鹏
GeoGebra
New Resources
Nested spiral octagon
直角坐標平面上的旋轉變換
兩組對邊相等的四邊形
四邊形的特性
近似值：有效數字
Discover Resources
錯覺藝術
Locus教學
七巧板
同角三角函数的基本关系（正六边形记忆法）
点阵
Discover Topics
Exponential Functions
Pythagoras or Pythagorean Theorem
Subtraction
Algebra
Terms