Across
1
Comparison of two quantities
2
Number greater than zero
5
Sum divided by count
6
Difference between highest and lowest values
10
Math using letters for unknown values
14
Collection of distinct elements
Down
2
Closed shape with straight sides
3
Symbol representing unknown value
4
Number that divides evenly into another
7
Proven mathematical statement
8
Rectangular array of numbers
9
Three-sided polygon
11
Value that does not change
12
Reference line in a graph
13
Part of a line with two endpoints