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Proposed Problem 407.
Circle, Angle, Tangent, Perpendicular, Secant, Radius, Center. |
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Proposed Problem 406.
Right triangle, 15 degrees, Midpoints, Congruence. |
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Proposed Problem 405.
Quadrilateral, 60, 75, and 135 degrees, Midpoint. |
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Jenn 3D, free software tool for visualizing Coxeter
polytopes.
Interactive mind map. |
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Proposed Problem 404.
External Equilateral triangles, Congruent and Concurrent Lines. |
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Concurrent lines.
Theorems and Problems Index. |
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Median of a Trapezoid, Theorems and Problems.
Index.
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Da Vinci Polyhedra and Jenn 3D tool.
Index |
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Da Vinci Tetrahedron and Jenn 3D tool for visualizing
Coxeter polytopes.
Jenn 3D is a free software license program for visualizing
regular polytopes in stereographic projection. |
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Da Vinci Cube and Jenn 3D tool for visualizing Coxeter
polytopes.
Jenn 3D is a free software license program for visualizing
regular polytopes in stereographic projection. |
|
 |
Da Vinci Octahedron and Jenn 3D tool for visualizing Coxeter
polytopes.
Jenn 3D is a free software license program for visualizing
regular polytopes in stereographic projection. |
|
 |
Da Vinci Icosahedron and Jenn 3D tool for visualizing
Coxeter polytopes.
Jenn 3D is a free software license program for visualizing
regular polytopes in stereographic projection. |
|
 |
Da Vinci Dodecahedron and Jenn 3D tool for visualizing
Coxeter polytopes.
Jenn 3D is a free software license program for visualizing
regular polytopes in stereographic projection. |
|
 |
Circular Sector. Index.
Theorems and Problems.
|
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 |
Proposed Problem 403.
Circular sector, 90 degrees, Circle, Semicircle, Area. |
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Proposed Problem 402.
Hexagon, Triangle, Centroid, Parallel, Congruence, Similarity. |
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