| 31. | All triangles and all regular polygons are bicentric.
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| 32. | Uniform polyhedra can be divided between convex forms with convex regular polygon faces and star forms.
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| 33. | Regular polygons increase their roundness with increasing numbers of sides, even though they are still sharp-edged.
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| 34. | Methods for folding most regular polygons up to and including the regular 19-gon have been developed.
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| 35. | A six-sided polygon is a hexagon, one of the three regular polygons capable of tiling the plane.
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| 36. | There are numerous topologically distinct forms of a tetradecahedron, with many constructible entirely with regular polygon faces.
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| 37. | Here right triangles made from symmetry sections of regular polygons are used to calculate fundamental trigonometric ratios.
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| 38. | The megagon is also used as an illustration of the convergence of regular polygons to a circle.
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| 39. | Regular polygons are equilateral and cyclic.
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| 40. | Among regular polygons, only the triangle and square can be dissected into smaller equally sized copies of themselves.
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