tetrahedron

Noun

Meaning

A solid figure inclosed or bounded by four triangles.

Source: Webster's dictionary

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Today, no less than in the past, the tetrahedral form of the earth and the relation of the tetrahedron to the poles and to the equator preserve the conditions that favor rapid evolution. Ellsworth Huntington

Also, in part due to self-duality of the tetrahedron, only one Archimedean solid has only tetrahedral symmetry. Source: Internet

All sp 3 -hybridized atoms are surrounded by atoms (or lone electron pairs ) at the four corners of a tetrahedron. Source: Internet

A line segment joining a vertex of a tetrahedron with the centroid of the opposite face is called a median and a line segment joining the midpoints of two opposite edges is called a bimedian of the tetrahedron. Source: Internet

A negative value of the determinant means that a tetrahedron cannot be constructed with the given distances. Source: Internet

A number of designs were used, including a tetrahedron which could be close-packed without waste space, and could not be knocked over accidentally. Source: Internet

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