Across
1
Corner point of a polygon
5
Closed shape with straight sides
6
Total distance around a shape
7
Line touching circle at one point
9
Exact correspondence on both sides
10
Number greater than zero
13
Middle value in an ordered dataset
Down
2
Comparison of two quantities
3
Difference between highest and lowest values
4
Number less than zero
8
Distance from center to edge of circle
11
Reference line in a graph
12
Mathematical rule or equation