Across
1
Collection of distinct elements
3
Number less than zero
7
Number that divides evenly into another
8
Repeated addition
9
The number representing nothing
13
Closed shape with straight sides
Down
1
Result of addition
2
Split into equal parts
4
Result of raising a number to an exponent
5
Power to which a number is raised
6
Part of a circle's circumference
10
Number with digits after a point
11
Math using letters for unknown values
12
Round shape with all points equidistant