Across
1
Math using letters for unknown values
5
Divisible by two
6
Amount of space an object occupies
9
Distance from center to edge of circle
10
Reference line in a graph
Down
2
Difference between highest and lowest values
3
Part of a circle's circumference
4
Single numeral from 0 to 9
7
Steepness of a line
8
Split into equal parts