Across
1
Part of a line with two endpoints
4
Comparison of two quantities
5
Line segment connecting two circle points
7
Closed shape with straight sides
8
Sum divided by count
11
Single numeral from 0 to 9
12
Number less than zero
Down
1
Steepness of a line
2
Proven mathematical statement
3
Line touching circle at one point
6
Visual representation of data
9
Round shape with all points equidistant
10
Difference between highest and lowest values
13
Divisible by two