Across
1
The number representing nothing
3
Math using letters for unknown values
6
Round shape with all points equidistant
8
Amount of space an object occupies
10
Single numeral from 0 to 9
11
Number that divides evenly into another
Down
2
Divisible by two
4
Lines that never intersect
5
Rectangular array of numbers
7
Mathematical statement of equality
9
Result of raising a number to an exponent