Across
1
Sum divided by count
5
Steepness of a line
7
Longest side of a right triangle
8
Closed shape with straight sides
9
Rectangular array of numbers
Down
2
Difference between highest and lowest values
3
Number divisible only by 1 and itself
4
Result of raising a number to an exponent
5
Collection of distinct elements
6
Distance from center to edge of circle