Across
1
Number that divides evenly into another
2
Exact correspondence on both sides
3
Sum divided by count
4
Difference between highest and lowest values
7
Middle value in an ordered dataset
8
Divisible by two
9
Reference line in a graph
10
Result of raising a number to an exponent
Down
2
Rectangle with four equal sides
3
Part of a circle's circumference
5
Three-sided polygon
6
Mathematical statement of equality
11
Symbol representing unknown value
12
Number greater than zero