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定长线段在相交直线上滑动
Author:
冯伟冀
GeoGebra
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平行線的判定
斐波那契螺旋弧线(表格法)
湖南省中职数学教师省培(GeoGebra培训案例)
龙形曲线-分形龙
小学资源收集
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Heidi Lin - Conic Section
雜類,其他
捷徑
封閉著色2
变化的三角形的外心.许兴华数学
Discover Topics
Optimization Problems
Rotation
Equations
Parallelogram
Trapezoid