Across
1
Line touching circle at one point
3
Distance from center to edge of circle
6
Steepness of a line
8
Longest side of a right triangle
9
Difference between highest and lowest values
10
Single numeral from 0 to 9
12
Math using letters for unknown values
Down
2
Part of a line with two endpoints
4
Visual representation of data
5
Round shape with all points equidistant
6
Result of addition
7
Three-sided polygon
11
Divisible by two
13
Middle value in an ordered dataset