Across
1
Total distance around a shape
5
Divisible by two
6
Line touching circle at one point
8
Round shape with all points equidistant
9
Lines that never intersect
10
Power to which a number is raised
Down
1
U-shaped curve of a quadratic function
2
Difference between highest and lowest values
3
Reference line in a graph
4
Rectangular array of numbers
7
The number representing nothing