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Geometry
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Demonstrations 21  40 of 2831
Area of Parallelogram in Terms of Its Diagonals
New this month
Fourier Construction of Regular Polygons and Star Polygons
New this month
Symmetry of a Mystery Curve
New this month
Compound of Tetrahedron and Cube
New this month
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
Logistic Model for Population Growth
Exponential Model for Population Growth
The Integraph: An Integrating Mechanism
Bicycle Wheels Using Curves of Constant Width
Polyhedral Playground
Spirals of Squares
Arbitrary Curves of Constant Width
Iteratively Reflecting a Point in the Sides of a Triangle
Making a Hexagon Using a FoldandTwist Algorithm
Asymmetric Spirographs
Thomson Problem Solutions
Representations of Trigonometric and Hyperbolic Functions in Terms of Sector Areas
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