Across
1
Difference between highest and lowest values
5
Power to which a number is raised
6
Proven mathematical statement
7
Middle value in an ordered dataset
8
Repeated addition
9
Steepness of a line
11
Three-sided polygon
12
Reference line in a graph
Down
2
Exact correspondence on both sides
3
Longest side of a right triangle
4
Number greater than zero
10
Part of a whole number