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Chapter 12 vocab

Surface area and volume of solids

TermDefinition
polyhedron A solid that is bounded by polygons, called faces, that enclose a single region of space
platonic solids Five regular polyhedrons, named after the Greek mathematician and philosopher Plato
cross selection The intersection of a plane and a solid
prism A polyhedron with two congruent faces, called bases, that lie in parallel planes
surface area The sum of the area of the faces of a polyhedron or other solid
lateral area The sum of the areas of the lateral faces of a polyhedron or other solids with one or two bases
net The two-dimensional representation of the faces of a polyhedron
right prism A prism in which each lateral edge is perpendicular to both bases
oblique prism A prism with lateral edges that are not perpendicular to the bases
cylinder A solid with congruent circular bases that lie in parallel planes
right cylinder A cylinder in which the segment joining the center of the bases is perpendicular to the bases
pyramid A polyhedron where the base is a polygon and the lateral faces are triangles with a common vertex
regular pyramid A pyramid that has a regular polygon as a base and in which the segments joining the vertex and the center of the base is perpendicular to the base
cone A solid that has one circular base and a vertex that is not in the same plane as the base
right cone A cone in which the segment joining the vertex and the center of the base is perpendicular to the base
volume The number of cubic units contained in the interior of a solid
sphere The set of all points in space equidistant from a given point called the center of the sphere
great circle The intersection of a sphere and a plane that contains the center of a sphere
hemisphere Half of a sphere, formed when a great circle separates a sphere into two congruent halves
similar solids Two solids of the same type with equal ratios of corresponding linear measures
Created by: calistaB
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