Across
1
Result of addition
3
Power to which a number is raised
5
Amount of space an object occupies
6
Difference between highest and lowest values
10
Line touching circle at one point
11
Three-sided polygon
Down
2
Longest side of a right triangle
4
Repeated addition
7
System of ordered marks for measuring
8
Sum divided by count
9
Single numeral from 0 to 9
12
Number that divides evenly into another