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Author:
羅驥韡 (Pegasus Roe)
GeoGebra
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常见四边形是否是双心四边形
探究三角形的全等條件
祖冲之的期望：内棋与外棋
垂直線的斜率
龙形曲线-分形龙
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平行四邊形面積教材四
Homework1
動態正方形(未完成)
doto属性研究
空白範本
Discover Topics
Diagrams
Square
Exponent
Differential Equation
Fractal Geometry