Across
1
Comparison of two quantities
4
Distance from center to edge of circle
6
Line touching circle at one point
7
Mathematical statement of equality
9
Part of a circle's circumference
10
Divisible by two
13
Visual representation of data
Down
2
System of ordered marks for measuring
3
The number representing nothing
5
Part of a whole number
8
Mathematical rule or equation
11
Part of a line with two endpoints
12
Single numeral from 0 to 9
14
Line crossing from corner to corner
15
Sum divided by count