Across
1
Number that divides evenly into another
4
Middle value in an ordered dataset
5
Difference between highest and lowest values
7
Exact correspondence on both sides
8
Amount of space an object occupies
9
Proven mathematical statement
12
Part of a line with two endpoints
13
Value that does not change
Down
2
Rectangle with four equal sides
3
Longest side of a right triangle
4
Rectangular array of numbers
6
Line crossing from corner to corner
10
Result of addition
11
Number less than zero