Across
1
Amount of space an object occupies
2
Steepness of a line
4
Power to which a number is raised
6
Sum divided by count
8
Part of a circle's circumference
Down
2
Collection of distinct elements
3
Divisible by two
5
Mathematical rule or equation
7
Math using letters for unknown values
9
Total distance around a shape
10
Symbol representing unknown value
11
Round shape with all points equidistant