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Lesson 's Glossary: 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.
Conic solid
The set of points between a point (the vertex) and a non-coplanar
region (the base), including the point and the region.
Cylinder
The surface of a cylindrical solid whose base is a circle.
Cylindrical surface
The union of the bases and the lateral surface.
Diameter of a circle (or sphere)
The segment whose endpoints are points on a circle (or sphere) that
contains the center of the circle as its midpoint; the length of
that segment. L.A.
Lateral area.
Lateral area
The area of the lateral surface of a solid.
Lateral surface
The surface not included in the base (s).
Oblique prism or cylinder
A non-right prism or cylinder.
Solid
The union of the surface and the region of space enclosed by a 3-D
figure; examples: conic solid, cylindrical solid, rectangular solid.
Solid geometry
The study of figures in three-dimensional space.
Space
The set of all possible points; made up of infinite planes.
Surface
The boundary of a 3-D figure.
Surface area
The total area of the surface of a solid.
Unit cube
Unit of measuring volume.
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