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The Art of Problem Posing
Author:
Steve Phelps
"What if each attribute were not so; what could it be then?"
Brown & Walter, 2005
https://www.amazon.com/Art-Problem-Posing-Stephen-Brown/dp/0805849777
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Random Polar Curve (3)
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Viviani's Curve
Untitled
Model sferyczny - dwunastościan-dwudziestościan
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Infinity Square
Ülesanne 8 (ül 746/3)
Vertically Opposite
Re-Re-Assess Summ Algebra 2 Exponents, Roots and Logarithms
Four regular hexagons in a cube form a cuboctahedron
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Arithmetic Operations
Similar Triangles
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