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Geometry
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Demonstrations 101  120 of 2749
Orthogonal Projection of a Solid of Constant Width
Angle of Intersection for Equiangular Spirals
PythagoreanHodograph Quintic Curves
Enlargement in Two Dimensions
The Ellipse Problem of Steinhaus
Approximating Polar Area with Sectors
Lissajouslike Kolam
Triangle Altitude
Horgan Minimal NonSurface
Infinite Magic Elliptic Curves
Intrinsic 3D Curves
Calendar on Dodecahedron
Toroidal Helices
2D Perspective View of a 3D Object
Fractal Tetrahedron in an Octahedron
Two Proofs that the Volume of the Regular Octahedron Is Four Times the Volume of the Regular Tetrahedron
Calculating and Plotting BSpline Basis Functions
80 Golden Rhombohedra
Symmetries of a Prism
Proposition 30, Book XI, Euclid's Elements
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