Across
1
Steepness of a line
4
Number greater than zero
5
Total distance around a shape
6
Lines that never intersect
9
Space between two intersecting lines
Down
1
Collection of distinct elements
2
Line crossing from corner to corner
3
Longest side of a right triangle
4
Result of raising a number to an exponent
7
Number with digits after a point
8
Reference line in a graph
10
Divisible by two
11
The number representing nothing