Across
1
Repeated addition
4
Number less than zero
7
Rectangular array of numbers
8
Distance from center to edge of circle
11
Symbol representing unknown value
12
Split into equal parts
Down
2
Amount of space an object occupies
3
Power to which a number is raised
5
Part of a circle's circumference
6
Visual representation of data
9
Line touching circle at one point
10
Mathematical rule or equation
13
Lines that never intersect