Across
1
Number divisible only by 1 and itself
4
Collection of distinct elements
5
Single numeral from 0 to 9
7
Lines that never intersect
8
Value that does not change
9
Closed shape with straight sides
11
Line touching circle at one point
14
Reference line in a graph
Down
1
Number greater than zero
2
Number that divides evenly into another
3
Rectangular array of numbers
6
Number less than zero
10
Repeated addition
12
Line segment connecting two circle points
13
Sum divided by count