Across
1
Steepness of a line
4
Single numeral from 0 to 9
5
Mathematical statement of equality
6
Result of raising a number to an exponent
8
Rectangle with four equal sides
9
Number divisible only by 1 and itself
Down
2
Lines that never intersect
3
Total distance around a shape
7
Line segment connecting two circle points
8
Part of a line with two endpoints
10
Sum divided by count