Across
1
Value that does not change
4
Difference between highest and lowest values
5
Comparison of two quantities
6
Total distance around a shape
7
Corner point of a polygon
10
Three-sided polygon
11
Result of addition
Down
2
Lines that never intersect
3
Power to which a number is raised
8
Reference line in a graph
9
Visual representation of data
12
Steepness of a line
13
Number with digits after a point