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Polygons
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Demonstrations 341  360 of 434
Lindgren's Dissection of One Decagram {10/3} into Two Pentagrams {5/2}
Dissecting a Dodecagram into Two Hexagrams
Dissecting a Dodecagram {12/2} into a Hexagram {6/2}
Lindgren's Dissection of a Pentagram into a Decagon
Dissecting a Hexagram into Three Hexagrams
Dissecting a Dodecagram into a Triangle
Dissecting a Decagram {10/4} into Two Decagons
Dissecting an Octagon into Four Smaller Octagons
Dissecting a Decagon into Two Pentagons and Two Pentagrams
TwoOctagonsintoOne Dissection in Two Steps
Freese's TwoOctagonsintoOne Dissection
The 26Sided Unilluminable Room
The Minkowski Sum of a Disk and a Polygon
Successive Averages of the Vertices of a Polygon
Interior and Exterior Angles of Equilateral Figures
The Minkowski Sum of Two Triangles
Area of a Parallelogram
Cutting Polygons
Ptolemy's Theorem
Miquel's Pentagram Theorem
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