Across
1
Closed shape with straight sides
5
Single numeral from 0 to 9
6
Result of raising a number to an exponent
7
Sum divided by count
8
The number representing nothing
11
Divisible by two
Down
1
Parts per hundred
2
Space between two intersecting lines
3
Math using letters for unknown values
4
Three-sided polygon
9
Line crossing from corner to corner
10
Visual representation of data