Across
1
Three-sided polygon
5
Total distance around a shape
6
Difference between highest and lowest values
7
Rectangle with four equal sides
8
Number that divides evenly into another
10
Sum divided by count
12
Proven mathematical statement
Down
2
Middle value in an ordered dataset
3
Part of a line with two endpoints
4
U-shaped curve of a quadratic function
9
Power to which a number is raised
11
Lines that never intersect
13
Result of multiplication
14
Part of a circle's circumference