Across
1
Symbol representing unknown value
6
Comparison of two quantities
7
Mathematical rule or equation
8
Split into equal parts
10
Steepness of a line
12
Rectangle with four equal sides
Down
2
Power to which a number is raised
3
Number greater than zero
4
Rectangular array of numbers
5
Math using letters for unknown values
9
Line crossing from corner to corner
11
Amount of space an object occupies
13
Three-sided polygon