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pic6-stlx02平行四边形
Author:
刘芳
GeoGebra
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平行線的斜率
漂亮的摇摆曲线
祖冲之的期望：内棋与外棋
探究三角形的全等條件
直線的斜率
Discover Resources
固定周界的長方形面積變化
regular hexagon construction
外公切線段長求法
尺规作图_课本内容
诱导公式六（90°-α）
Discover Topics
Geometric Distribution
Confidence Interval
Random Variables
Vectors
Optimization Problems