Across
1
Rectangle with four equal sides
3
Part of a circle's circumference
4
Lines that never intersect
5
Comparison of two quantities
7
Power to which a number is raised
8
Reference line in a graph
9
Round shape with all points equidistant
Down
1
Part of a line with two endpoints
2
Symbol representing unknown value
4
Number greater than zero
6
Line segment connecting two circle points