Across
1
Number greater than zero
4
Closed shape with straight sides
7
Part of a line with two endpoints
10
Symbol representing unknown value
11
Part of a circle's circumference
Down
2
Power to which a number is raised
3
Single numeral from 0 to 9
5
Math using letters for unknown values
6
Comparison of two quantities
8
Space between two intersecting lines
9
Repeated addition
12
Corner point of a polygon