Across
1
Rectangle with four equal sides
4
Repeated addition
5
Middle value in an ordered dataset
7
Part of a line with two endpoints
8
Longest side of a right triangle
11
Divisible by two
Down
1
Steepness of a line
2
Comparison of two quantities
3
Amount of space an object occupies
6
Exact correspondence on both sides
9
Sum divided by count
10
Visual representation of data
12
Number less than zero