In math, things that can change are called variables. The things that do not change are called constants.
vector space
A vector is a quantity having magnitude and direction, represented by a directed arrow indicating its orientation in space. Vector space is the three dimensional area where vectors can be plotted
velocity
The rate of change of position over time is velocity, calculated by dividing distance by time
Venn Diagram
A diagram where sets are represented as simple geometric figures, with overlapping and similarity of sets represented by intersections and unions of the figures
vertical angles
The two nonadjacent angles formed when two straight lines intersect
volume
A measure of the number of cubic units needed to fill the space inside an object