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Polygons
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Demonstrations 61  80 of 393
Three Proofs of the Pythagorean Theorem
JugtoSquare Dissection
Cyclogons
TwistHinged 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 TwistHinged 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
SwingandTwistHinged Dissection of an Octagon to Two Octagons
TwistHinged Dissection of One Pentagon to Four
PianoHinged Dissection of an Ellipse to a Heart
Decomposition of Some Polygons to IsoPenta Triangles
TwistHinged Dissection of One Parallelogram into Another with the Same Angles
Dissection of a Regular Pentagon into Three Pentagons
Dissection of One Triangle to Another
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