Across
1
Space between two intersecting lines
4
Reference line in a graph
5
Number less than zero
11
Sum divided by count
Down
2
Power to which a number is raised
3
Lines that never intersect
6
Line crossing from corner to corner
7
Rectangular array of numbers
8
Mathematical rule or equation
9
Number greater than zero
10
Visual representation of data
12
Math using letters for unknown values