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内外弦图
Author:
叶明杰
GeoGebra
New Resources
第三周作业效果演示
异形操场
龙形曲线-分形龙2
双心四边形
斐波那契螺旋弧线（表格法-可动态调节）
Discover Resources
模擬3D---圓錐曲線的產生
Difference of Two Cubes
圖形的周界
長方形面積法 _單項式乘法
認識分數的副本
Discover Topics
Sequences and Series
Vectors 3D (Three-Dimensional)
Square
Reflection
Upper and Lower Sum or Riemann Sum