Across
1
Power to which a number is raised
5
Line crossing from corner to corner
6
Divisible by two
7
Distance from center to edge of circle
8
Reference line in a graph
10
Sum divided by count
13
The number representing nothing
Down
2
Number less than zero
3
Amount of space an object occupies
4
Math using letters for unknown values
9
Mathematical rule or equation
11
Rectangle with four equal sides
12
Longest side of a right triangle
14
Symbol representing unknown value