platonic solid

(redirected from Regular solids)
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platonic solid

[plə‚tȧn·ik ′säl·əd]
(mathematics)
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Within the frame of traditional education in the characteristics of regular polyhedrons at basic and secondary schools, or in the education of future teachers of mathematics, one of the highest educational goals is perhaps the ability to show the mutual duality of two regular solids. The construction tools and dynamic possibilities of DG systems allow a more detailed investigation of regular solids or geometrical relations between regular polyhedrons.
* Semi-solid and pureed foods are easier than regular solids.
In addition to the familiar theorems of geometry, the, thirteen books (long chapters) of the Elements also cover number theory, incommensurable or irrational quantities, solid geometry and the properties of polyhedra (regular solids, from the tetrahedron--a four-sided solid--to the icosahedron, the twenty-sided solid), and a type of "geometrical algebra."