| 释义 |
prismatoid
pris·ma·toid P0567300 (prĭz′mə-toid′)n. A polyhedron all of whose vertices lie in one of two parallel planes.
[Greek prīsma, prīsmat-, prism + -oid.]
pris′ma·toi′dal (-toid′l) adj.prismatoid (ˈprɪzməˌtɔɪd) n (Mathematics) a polyhedron whose vertices lie in either one of two parallel planes. Compare prism3, prismoid[C19: from Greek prismatoeidēs shaped like a prism; see prism, -oid] ˌprismaˈtoidal adjpris•ma•toid (ˈprɪz məˌtɔɪd)
n. a polyhedron having its vertices lying on two parallel planes. [1855–60; < Greek prīsmat- (s. of prîsma) prism] Thesaurus| Noun | 1. | prismatoid - a polyhedron whose vertices all lie in one or the other of two parallel planes; the faces that lie in those planes are the bases of the prismatoidpolyhedron - a solid figure bounded by plane polygons or facesprismoid - a prismatoid whose bases are polygons having the same number of sides and whose other faces are trapezoids or parallelograms |
Prismatoid
prismatoid[′priz·mə‚tȯid] (mathematics) A polyhedron whose vertices all are in one or the other of two parallel planes. Prismatoid a polyhedron in which two faces (the bases of the prismatoid) lie in parallel planes and the remaining faces are  Figure 1
triangles or trapezoids, where one side of each triangle and two sides of each trapezoid are edges of the bases (see Figure 1). The volume of a prismatoid is equal to (h/6) (S + S′ + 4S″), where h is the perpendicular distance between the bases, S and S′ are the areas of the bases, and S″ is the area of a plane section midway between the two bases. MedicalSeeprismoidprismatoid
Words related to prismatoidnoun a polyhedron whose vertices all lie in one or the other of two parallel planesRelated Words |