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Tetrahedron

TETRAHE'DRON, n. [Gr. four, and side.] In geometry, a figure comprehended under four equilateral and equal triangles; or one of the five regular Platonic bodies of that figure.

Webster Dictionary
English dictionary 16.3 MB

Meaning

TETRAHE'DRON, n. [Gr. four, and side.] In geometry, a figure comprehended under four equilateral and equal triangles; or one of the five regular Platonic bodies of that figure.

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