Across
1
Amount of space an object occupies
3
Collection of distinct elements
5
Part of a circle's circumference
6
Result of raising a number to an exponent
7
Number with digits after a point
9
Number less than zero
10
Power to which a number is raised
11
Math using letters for unknown values
Down
2
Line touching circle at one point
4
Repeated addition
6
Number greater than zero
8
Part of a whole number
12
Exact correspondence on both sides