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斜率探究
Author:
Norman Wong
GeoGebra
New Resources
百分數及其應用
第八周作业1
龙形曲线-分形龙2
斐波那契螺旋弧线（表格法-可动态调节）
双心四边形
Discover Resources
自我練習
廣義角的代換(90度加減角度)
乘法
somacube
平面截圆柱体
Discover Topics
Matrices
Arithmetic Operations
Trigonometry
Division
Centroid or Barycenter