Across
1
Collection of distinct elements
3
Number divisible only by 1 and itself
4
Middle value in an ordered dataset
6
Math using letters for unknown values
7
Number greater than zero
9
Single numeral from 0 to 9
10
Reference line in a graph
11
Part of a line with two endpoints
Down
2
Rectangular array of numbers
5
Number less than zero
6
Space between two intersecting lines
8
Visual representation of data
11
System of ordered marks for measuring