Base of a conic solid
The planar region that forms the widest point of a conic solid; often labeled as the 'bottom' of the conic solid, it determines the exact shape of the conic solid.
The set of points between a point (the vertex) and a non-coplanar region (the base), including the point and the region.
A segment that helps to make up a face.
A polygonal region of a surface.
The area of the lateral surface of a solid.
A segment whose endpoints are corresponding points of a cylindrical solid's bases, or whose endpoints are the vertex of a conic solid and a vertex of its base.
The faces of the lateral surface of a prism, or a face of a pyramid that is not a base.
The surface not included in the base (s).
A three-dimensional surface which is the union of polygonal regions and has no holes.
It is a polyhedron whose base is a polygon and whose lateral faces are triangles with a common vertex called the vertex of the pyramid. The perpendicular segment whose endpoints are at the base and at the vertex of the pyramid is the altitude, which is the height of the pyramid. A regular pyramid has congruent isosceles triangles in the lateral faces and a regular polygon in the base. The length of the height for the lateral triangles is the slant height for the pyramid.
A pyramid whose base is a regular polygon and whose vertex forms a segment with the center of the polygon perpendicular to its plane.
The length of a lateral edge of a conic solid.
The union of the surface and the region of space enclosed by a 3-D figure; examples: conic solid, cylindrical solid, rectangular solid.
The study of figures in three-dimensional space.
The set of all possible points; made up of infinite planes.
The boundary of a 3-D figure.
The total area of the surface of a solid.
Unit of measuring volume.
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