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S0G3R2:三角形的外角和2:三角形的外角
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学用数学
GeoGebra
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aperiodic monotile construction_step by step
Art and Rotational Symmetry
Exploring the Derivative of an Exponential Function
Droste effect
Kopie von parabel - parabol
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Exercice 1 (2)
Stückweise Funktionen
GoGeometry Action 136!
Two Polygon Tilings
Vector Field (unit vectors and fractional scalar)
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Arithmetic Operations
Equilateral Triangles
Straight Lines
Percentages
Diagrams