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Triangles
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Demonstrations 101  120 of 565
Rational Distance Problem
Triangle Radicals
Congruence Classes of Geoboard Triangles
Triangle Altitudes and Circumradius
Folding a Strip to Converge to an Equilateral Triangle
Arbitrary Curves of Constant Width
Iteratively Reflecting a Point in the Sides of a Triangle
Halving a Triangle
Another Variant of Kosnita's Theorem
Trisecting an Angle Using the Cycloid of Ceva
How Many Triangles in a SixPointed Star?
Spherical Pythagorean Theorem
Repeatedly Subdividing Triangles through Special Points
Halving a Triangle Perimeter
Some Polyhedra with Identical Triangular Faces
Octahedra Constructed from Eight Identical Triangles
NonEuclidean Triangle Continuum
Doubling a Distance with a Compass
Maximize the Number of Vertices in an Equilateral Triangular Lattice
Triangulating Random and Regular Polygons
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