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Kocka in zlati rez 3D...
Author:
Tao Chi
New Resources
Letters
Ellipse and String
Multiplication Challenge
Pythagorean Tiling
Angles in an Equilateral Triangle
Discover Resources
Cairo street tiling revisited
Featured Workshop Presenters (in Alphabetical Order)
Reflecting a point about a line
Natural symmetries by a body of water
Dot-2
Discover Topics
Upper and Lower Sum or Riemann Sum
Cosine
Tangent Line or Tangent
Dilation
Incircle or Inscribed Circle