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Geometry
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Demonstrations 1  20 of 3714
Projected Area of a Cuboid
Updated this week
Ruler and Compass Construction of a Square with Doubled Area
New this month
Shortest Distance between Two Skew Lines
New this month
Apollonian Circle Packings via Möbius Transformations of Hyperbolic Polygons
New this month
Parallel Lines Have the Same Slope
Right Tetrahedron: de Gua Theorem
Midpoint and Centroid Formulas
Approximating Pi Using Inscribed and Circumscribed Circles of Regular Polygons
SpaceFilling Fractal Curves
Wedging an Angle between Two Circles Produces a Limaçon
Centroids of Triangles with Vertices on the Unit Circle
Twisted Surfaces of Revolution
Coinciding Faces of Six Archimedean Solids
Cubes on a Rhombic Hexecontahedron
Drawing a Regular Polygon
Assembling a Golden Great Rhombicosidodecahedron
Golden Truncated Icosahedron
Rhombic Enneacontahedron Sandwich
Exploring Cylindrical Coordinates
EqualArea Parallelograms Using Determinants
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