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Trefoil knot

Author:Petr Zelenka

Topic:Parametric Curves

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Tube at distance of a 3D curve.
GeoGebra around GeoGebra
Constructing Equilateral Triangles + Activities
Constructing the Copy of an Angle + Angles Activities
Trophy (version 2)

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UCSS Math I 1.5.1 Example 4
Isomorphic graphs
Tesselations
Ruler and Compass Constructions
verhaeltnis_konstruktion_alternativ

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Natural Numbers
Complex Numbers
Sequences and Series
Poisson Distribution
Tangent Line or Tangent

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