Across
1
Value that does not change
4
Symbol representing unknown value
8
Line crossing from corner to corner
9
Sum divided by count
10
Result of addition
12
Single numeral from 0 to 9
Down
2
Comparison of two quantities
3
Repeated addition
5
Distance from center to edge of circle
6
Result of multiplication
7
Reference line in a graph
11
Longest side of a right triangle
13
Middle value in an ordered dataset
14
Difference between highest and lowest values