__V__

**Value
of a variable ** Any number that a variable represents.

**Variable
** A symbol used to represent one or more numbers.

**Variable
expression ** A mathematical
expression that contains a variable.

**Vertex
**(of angle) The common endpoint of the rays forming an angle

**Vertex
**(of polygon) Any one of the endpoints of the segments forming the polygon

**Vertex
**(of polyhedron) A point where the edges of a polyhedron intersect

**Vertex
**(of prism) Any one of the points where the edges of a prism intersect

**Vertex
of a polygon or polyhedron ** 0, * * The point at which two sides of a polygon or three or more
edges of a polyhedron intersect.

**Vertex
of an angle ** The common
endpoint of two intersecting rays.

**Vertical
angles ** The angles
opposite each other when two lines intersect to form four angles

**Volume
** A measure of the space
occupied by a solid.