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Demonstrations 1  20 of 525
1. Nets for Cowley's Dodecarhombus
Updated this month
Nonplanar Rectangular Heptagons
New this month
2. Mazes on Polyhedral Nets
Matching Faces in Two Polyhedron Nets
FourColor Maps
Path Nets for Dodecahedron and Icosahedron
A Construction of the Square Root of Seven
Franklin's Point Inclusion in Polygon (PNPOLY) Algorithm
Freese's Dissection of a Regular Dodecagon into 12
Polygons on n Vertices
Pappus's Hexagons
Freese's Dissection of a Regular Hexagon into Seven Hexagons
Inscribed Triangles in Polygons
Right Pyramid Volume and Surface Area
Freese's Dissection of a Regular Dodecagon into Six Squares
2. Ambiguous Rings Based on a Polygon
Total Areas of Alternating Subtriangles in a Regular Polygon with 2n Sides
Sum of the Squares of the Sides of a Projected Regular Tetrahedron
Polyhedron Faces Identification
The Sum of Opposite Angles of a Quadrilateral in a Circle is 180 Degrees
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