# MATH GLOSSARY

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Title Description
Value Value is worth as well as numerical equivalence.
We can estimate the worth or value of a product or service.
The value of pi (π) is constant, and we approximate that value when we express it as a decimal, as 3.14 or 3.14159. Variable A Variable is a symbol, most often a letter, to represent a quantity that may change value, that is literally to vary in its value. Vector Often represented with an arrow, a Vector is a quantity with both magnitude (size) and direction. Vector Calculus A piece of multivariable (or multivariate) Calculus, Vector Calculus concerns itself with Vector fields, their derivatives and integrals, most often in three-dimensional space. Velocity Formally a vector in physics, Velocity has both magnitude (speed) and direction. Venn Diagram Most often graphics of overlapping circles and ovals, a Venn Diagram depicts sets, subsets, and their intersections and unions. Verify To confirm is to Verify.
When we Verify, we prove or establish some assertion to a dependable conclusion independent from bias.
There is wisdom in these words: "Trust, but Verify." Vertex A "corner" of a polygon is a Vertex; an extremum of a conic section is a Vertex; the endpoint(s) of rays that form an angle is a Vertex. Vertical Straight up, perpendicular to horizontal, is Vertical.
Vertical lines have an indeterminate or infinite slope. Vertical Angles When two lines cross (intersect) they form two pairs of Vertical Angles; the Angles within each pair of Vertical Angles are congruent. Vertical Line Test Given a relation between x and y expressed as y = f(x), the relation is a function if the graph passes the Vertical Line Test; no vertical line may cross the graph more than once.
No single element from the domain of x may generate more than a single value of y mapped into the range, to be considered a function. Volume The extent to which an object fills units of three-dimensional space is its Volume. Please send us an email with your suggestions for this glossary. We at Mr. X want this site to be as helpful as possible.

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