Across
1
Power to which a number is raised
4
Rectangular array of numbers
6
Distance from center to edge of circle
7
Part of a circle's circumference
8
Exact correspondence on both sides
10
Steepness of a line
Down
2
Round shape with all points equidistant
3
Result of raising a number to an exponent
4
Repeated addition
5
Longest side of a right triangle
9
Sum divided by count
11
Total distance around a shape