N I O I P I Q I R I S I T I U I V I W I X I Y I Z

**A**I B I C I D I E I F I G I H I I I J I K I L I MN I O I P I Q I R I S I T I U I V I W I X I Y I Z

## V

A letter used to represent a number value in an expression or an equation.

Quantity that has magnitude (length) and direction. It may be represented as a directed line segment.

The point on an angle where the two sides intersect.

Perpendicular to horizontal; up and down as opposed to left and right.

A pair of opposite angles that is formed by intersecting lines.

A way of testing a graphed relation to determine if it is a function.

Two angles formed by the intersection of two lines. They share a common vertex but no sides or interior points.

A measurement of space, or capacity. Formula = length x width x depth

**variable**A letter used to represent a number value in an expression or an equation.

**vector**Quantity that has magnitude (length) and direction. It may be represented as a directed line segment.

**vertex**The point on an angle where the two sides intersect.

**vertical**Perpendicular to horizontal; up and down as opposed to left and right.

**vertical angles**A pair of opposite angles that is formed by intersecting lines.

**vertical line test**A way of testing a graphed relation to determine if it is a function.

**vertically opposite angles**Two angles formed by the intersection of two lines. They share a common vertex but no sides or interior points.

**volume**A measurement of space, or capacity. Formula = length x width x depth