Across
1
Line crossing from corner to corner
5
Power to which a number is raised
6
Number divisible only by 1 and itself
8
Exact correspondence on both sides
9
Total distance around a shape
Down
2
Longest side of a right triangle
3
Number less than zero
4
Reference line in a graph
7
Comparison of two quantities
10
Single numeral from 0 to 9