Across
1
Total distance around a shape
6
Rectangle with four equal sides
8
Difference between highest and lowest values
9
Result of raising a number to an exponent
11
Reference line in a graph
Down
2
Exact correspondence on both sides
3
Longest side of a right triangle
4
Single numeral from 0 to 9
5
Number divisible only by 1 and itself
7
Divisible by two
10
Visual representation of data
12
Split into equal parts
13
Number with digits after a point