Across
1
Number greater than zero
3
Power to which a number is raised
4
Single numeral from 0 to 9
6
Steepness of a line
7
Line crossing from corner to corner
9
Result of addition
Down
2
Corner point of a polygon
3
Mathematical statement of equality
4
Number with digits after a point
5
Math using letters for unknown values
8
Lines that never intersect