Across
1
Single numeral from 0 to 9
4
Part of a line with two endpoints
5
Number less than zero
Down
1
Split into equal parts
2
Line touching circle at one point
3
Proven mathematical statement
4
Steepness of a line
6
Number with digits after a point
7
Number divisible only by 1 and itself
8
Distance from center to edge of circle