Across
1
Sum divided by count
2
Rectangle with four equal sides
5
Single numeral from 0 to 9
6
Number less than zero
7
Repeated addition
8
Rectangular array of numbers
Down
2
Exact correspondence on both sides
3
Number that divides evenly into another
4
Part of a line with two endpoints
9
Visual representation of data
10
Divisible by two
11
System of ordered marks for measuring