Across
1
Single numeral from 0 to 9
4
Power to which a number is raised
5
Sum divided by count
6
System of ordered marks for measuring
8
Repeated addition
10
Space between two intersecting lines
13
Comparison of two quantities
Down
2
Middle value in an ordered dataset
3
Part of a whole number
4
Divisible by two
7
Split into equal parts
9
Three-sided polygon
11
Difference between highest and lowest values
12
Reference line in a graph