Across
1
Mathematical rule or equation
3
Power to which a number is raised
4
Three-sided polygon
5
Difference between highest and lowest values
9
Rectangle with four equal sides
10
Total distance around a shape
Down
2
Reference line in a graph
3
Mathematical statement of equality
4
Line touching circle at one point
6
U-shaped curve of a quadratic function
7
Number that divides evenly into another
8
Number less than zero
11
Longest side of a right triangle