Across
1
Single numeral from 0 to 9
3
Amount of space an object occupies
4
Round shape with all points equidistant
6
Visual representation of data
8
Power to which a number is raised
11
Distance from center to edge of circle
Down
2
Reference line in a graph
3
Symbol representing unknown value
5
Number that divides evenly into another
7
Exact correspondence on both sides
9
The number representing nothing
10
Number greater than zero
12
Part of a whole number