Across
1
Power to which a number is raised
4
Part of a circle's circumference
5
Round shape with all points equidistant
6
Longest side of a right triangle
7
Space between two intersecting lines
8
Line touching circle at one point
Down
2
Number greater than zero
3
The number representing nothing
4
Sum divided by count
9
Number less than zero
10
Mathematical statement of equality
11
Corner point of a polygon
12
Part of a whole number