Across
1
Round shape with all points equidistant
4
Part of a circle's circumference
5
Power to which a number is raised
7
Difference between highest and lowest values
8
Single numeral from 0 to 9
9
Repeated addition
Down
2
Part of a whole number
3
Part of a line with two endpoints
4
Sum divided by count
6
Result of multiplication
10
Longest side of a right triangle
11
Closed shape with straight sides