Across
1
Reference line in a graph
4
Result of raising a number to an exponent
5
Rectangle with four equal sides
6
Total distance around a shape
7
Single numeral from 0 to 9
8
Power to which a number is raised
10
Lines that never intersect
Down
1
Math using letters for unknown values
2
Collection of distinct elements
3
Corner point of a polygon
5
Result of addition
9
Steepness of a line