Across
1
Line touching circle at one point
5
Math using letters for unknown values
6
Distance from center to edge of circle
7
Round shape with all points equidistant
9
Number less than zero
10
Line crossing from corner to corner
Down
2
Lines that never intersect
3
Single numeral from 0 to 9
4
Parts per hundred
5
Part of a circle's circumference
8
Line segment connecting two circle points