Across
1
Rectangle with four equal sides
4
Power to which a number is raised
6
Result of multiplication
8
Sum divided by count
Down
2
Number that divides evenly into another
3
Split into equal parts
5
Reference line in a graph
7
Parts per hundred
9
Result of raising a number to an exponent
10
Lines that never intersect
11
Number less than zero
12
Proven mathematical statement
13
Exact correspondence on both sides