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Demonstrations 1 - 20 of 344
Tiling with Pentominos
New this week
Three Proofs of the Pythagorean Theorem
Updated this month
Draw Polygons on Grids
Updated this month
Twist-Hinged Dissection That Doubles the Sides of a Polygon
Dissecting a Cross of Lorraine to a Greek Cross
Lindgren's Dissection of a Parallelogram to a Parallelogram
Geometry of Cubic Polynomials
Decomposition into Isosceles Triangles with Angles That Are Multiples of Pi/4
A Twist-Hinged Dissection of Triangles
Lindgren's Dissection of a Quadrilateral to a Triangle
Dissection of One Quadrilateral to Another
Concave Random Quadrilaterals from Four Points in a Disk
Two Dissections of a Mitre to a Gnomon
Swing-and-Twist-Hinged Dissection of an Octagon to Two Octagons
Twist-Hinged Dissection of One Pentagon to Four
Piano-Hinged Dissection of an Ellipse to a Heart
Decomposition of Some Polygons to Iso-Penta Triangles
Twist-Hinged Dissection of One Parallelogram into Another with the Same Angles
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