V

value

The possible outcomes of a variable. For example, red, green, and blue are possible values for the variable color. Two meters and 1.65 meters are possible values for the variable length.

page 10

variable

1. An quality or quantity that changes or varies in an investigation.

2. A symbol that can represent a variable.

pages 4, 9–10, 103, 212

vertex (vertices)

1. A point where the sides of a polygon meet.

2. A point where the edges of a three-dimensional object meet.

3. The common endpoint of two rays or line segments.

pages 307, 309, 317–318, 319, 321–322

vertical axis

In a coordinate grid or graph, the y-axis. It is perpendicular to the horizontal axis.

pages 4, 10, 22

volume

The measure of the amount of space an object occupies or can hold (capacity).

pages 400–405, 406–407, 408–412