( n. )
A solid figure contained by a plane rectilineal figure as base and several triangles which have a common vertex and whose bases are sides of the base.
( n. )
A solid figure contained by a plane rectilineal figure as base and several triangles which have a common vertex and whose bases are sides of the base.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012