Across
1
Number that divides evenly into another
2
Line crossing from corner to corner
4
Line touching circle at one point
5
Exact correspondence on both sides
9
Comparison of two quantities
12
Split into equal parts
13
Middle value in an ordered dataset
Down
2
Single numeral from 0 to 9
3
Reference line in a graph
6
Space between two intersecting lines
7
Rectangular array of numbers
8
Number divisible only by 1 and itself
10
Result of multiplication
11
Math using letters for unknown values