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Demonstrations 121 - 140 of 1326
Obtuse Random Triangles from Three Points in a Rectangle
Polyhedron Faces Identification
A Line Has Constant Slope
The Sum of Opposite Angles of a Quadrilateral in a Circle is 180 Degrees
Interior and Exterior Angles of Regular Polygons
Examples of Zindler Curves
Freese's Dissection of a Regular Pentadecagon into Two
Tangents to an Ellipse from a Given Point
Freese's Dissection of a Regular Decagon into Five
Freese's Dissection of a Regular Nonagon into Two
Freese's Dissection of a Regular Octagon into Nine
Freese's Dissection of a Regular Pentagon to a Square
Freese's Dissection of Two Regular Pentagons into a Square
Freese's Dissection of a Regular Octagon into Four
Freese's Dissection of a Regular Starlike Nonagram into Three Equilateral Triangles
Freese's Dissection of a Regular Pentagon into Two Smaller Ones
Freese's Two Dissections of a Regular Pentagon into Five
Primitive Relation for Elliptic Geometry
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