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百分數：買賣問題（Java 版）
Author:
Anthony OR 柯志明
HTML5版：
http://www.geogebratube.org/student/m64158
GeoGebra
New Resources
龙形曲线-分形龙2
垂直線的斜率
第八周作业
盈利與虧蝕
活动三：应用性质
Discover Resources
代數運算：外心座標
Sequence指令練習(二維)
How to draw a pentagon with ruler and compasses?
立方體截面
Ex5D#7
Discover Topics
Symmetry
Mode
Stochastic Process or Random Process
Polygons
Equilateral Triangles