Across
1
Symbol representing unknown value
4
Part of a circle's circumference
6
Sum divided by count
7
Part of a line with two endpoints
8
Steepness of a line
9
Value that does not change
10
Collection of distinct elements
Down
2
Mathematical rule or equation
3
Mathematical statement of equality
5
Power to which a number is raised
7
Rectangle with four equal sides
11
Part of a whole number