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Geometry
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Demonstrations 161  180 of 2967
Descartes's Geometric Solution of a Quadratic Equation
Bezdek's Unistable Polyhedron With 18 Faces
The Gyroid
Folding a Strip to Form Regular Odd nGons
Mondrian's Cubes
Geometry of TwoVariable Legendre Polynomials
Pi = 4?
VolumePreserving Transformations of Solid of Revolution
Paths inside a Polygon
Making a Strip of Isosceles Trapezoids
Guessing the Symmetry Group
Pythagorean Theorem for Regular Polygons
Area of Parallelogram in Terms of Its Diagonals
Fourier Construction of Regular Polygons and Star Polygons
Symmetry of a Mystery Curve
Compound of Tetrahedron and Cube
Construction of Squares from a Parallelogram
Folding a Strip into a Pentagon
Four Visual Proofs of a Theorem about a Regular Nonagon
Tiling a Hexagon
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