Across
1
Line touching circle at one point
3
Distance from center to edge of circle
8
Difference between highest and lowest values
Down
2
Exact correspondence on both sides
4
Power to which a number is raised
5
Result of multiplication
6
Round shape with all points equidistant
7
Lines that never intersect
9
Math using letters for unknown values
10
Number divisible only by 1 and itself