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GeoGebra
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龙形曲线-分形龙
中华人民共和国国旗
双心四边形
斐波那契螺旋弧线（表格法-可动态调节）
三角函数 的副本
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Quiz on Trigonometric Ratios 辨認三角比：測驗
千年曆
包絡線2
平面幾何新路
剪切成正三棱柱（制作：李三军，修订：孟宝兴）
Discover Topics
Vectors 2D (Two-Dimensional)
Linear Equations
Parametric Curves
Triangles
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