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### 33 Cards in this Set

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 polyhedron a solid that is bounded by polygons called faces that enclose a single region of space face the polygons on a polyhedron edge a line segment formed by the intersections of two faces of a polyhedron regular polyhedron a polyhedron whose faces are all congruent regular cross section the intersection of a plane and a solid platonic solids fine regular polyhedral tetrahedron a polyhedron with four faces octahedron a polyhedron with eight faces dodecahedron a polyhedron with twelve faces icosahedron a polyhedron with twenty faces prism a polyhedron with two congruent faces, called bases that lie in parallel planes right prism a prism whose lateral edges are perpendicular to both bases oblique prism a prism whose lateral edges are not perpendicular to the bases surface area of a polyhedron the sum of the areas of its faces lateral area of a polyhedron the sum of the areas of the lateral faces of a polyhedron net a two-demensional representation of all the faces of a polyhedron cylinder a solid with congruent circular bases that lie in parallel planes right cylinder a cylinder such that the segment joining the centers of the bases is perpendicular to the bases lateral area of a cylinder the area of the curved surface of a cylinder surface area of a cylinder the sum of the lateral area of the cylinder and the areas of the two bases pyramid a polyhedron in which the base is a polygon and the later-faces are triangles with a common vertex circular cone the solid with a circular base and a vertex that is not in the same plane as the base lateral surface of a cone the consists of all segments that connect the vertex with points on the edge of the base right cone a cone with a vertex that lies directly above the center of the base volume of a solid the number of cubic units contained in the interior of a solid sphere the locus of points in space that are a given distance from a point called the center of the sphere center of a sphere the center point radius of a sphere from the center to the side chord of a sphere a segment whose endpoints are on the sphere diameter of a sphere a chord that contains the center of the sphere great circle the intersection of a sphere and a plane the contains the center of the sphere hemisphere half of a sphere similar solids two solids with equal ratios of corresponding linear measures