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动态三角形
Author:
程振永
GeoGebra
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常见四边形是否是双心四边形
平行線的判定
双心四边形
斐波那契螺旋弧线(表格法)
折扣
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正弦定理
複合圖形(四)
ie 3
劉虹圻 內心
科氏力 (Coriolis Force)
Discover Topics
Limits
Distributions
Rhombus
Line Segment
Linear Equations