Across
1
Symbol representing unknown value
4
Amount of space an object occupies
5
Rectangular array of numbers
6
Difference between highest and lowest values
7
Part of a line with two endpoints
8
Power to which a number is raised
10
Number that divides evenly into another
Down
2
Number greater than zero
3
Number less than zero
4
Corner point of a polygon
9
Space between two intersecting lines
11
Lines that never intersect