Across
1
Result of raising a number to an exponent
3
Collection of distinct elements
4
Sum divided by count
5
Three-sided polygon
6
The number representing nothing
7
Value that does not change
12
Difference between highest and lowest values
Down
2
Power to which a number is raised
3
Exact correspondence on both sides
8
Parts per hundred
9
Number with digits after a point
10
Line crossing from corner to corner
11
Mathematical statement of equality