Across
1
Number that divides evenly into another
4
Reference line in a graph
5
Distance from center to edge of circle
8
Closed shape with straight sides
9
System of ordered marks for measuring
10
Math using letters for unknown values
13
Visual representation of data
Down
2
Comparison of two quantities
3
Result of raising a number to an exponent
6
Steepness of a line
7
Rectangular array of numbers
11
Lines that never intersect
12
Sum divided by count