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tetrahedron

UK
/ˌtɛtrəˈhiːdrən/
US
/ˌtɛtrəˈhidrən/

Translations

tetrahedronnoun
tetrahedra
pl
UK
/ˌtɛtrəˈhiːdrən/
US
/ˌtɛtrəˈhidrən/
A regular tetrahedron has four equilateral triangular faces.
Правильный тетраэдр имеет четыре равносторонние треугольные грани.
Synonyms
triangular pyramid
3-simplex
tetraedron

Definitions

tetrahedronnoun
A polyhedron with four triangular faces, six straight edges, and four vertex corners.
The dice used in some board games are shaped like a tetrahedron.
A type of pyramid with a triangular base, making it the simplest form of a pyramid.
In geometry class, we learned how to calculate the volume of a tetrahedron.
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