Across
1
Comparison of two quantities
4
Line touching circle at one point
6
Divisible by two
9
Power to which a number is raised
13
Distance from center to edge of circle
Down
2
Part of a whole number
3
Rectangular array of numbers
5
Reference line in a graph
7
The number representing nothing
8
Single numeral from 0 to 9
10
Corner point of a polygon
11
Symbol representing unknown value
12
Line crossing from corner to corner