Across
1
Number greater than zero
5
Longest side of a right triangle
6
U-shaped curve of a quadratic function
9
Space between two intersecting lines
Down
1
Number divisible only by 1 and itself
2
The number representing nothing
3
Comparison of two quantities
4
Line touching circle at one point
7
Divisible by two
8
Reference line in a graph
10
Power to which a number is raised