Across
1
Single numeral from 0 to 9
4
Line touching circle at one point
5
Number with digits after a point
6
Amount of space an object occupies
9
Collection of distinct elements
10
Round shape with all points equidistant
13
Sum divided by count
Down
2
Result of multiplication
3
Number greater than zero
4
Three-sided polygon
7
Mathematical statement of equality
8
Power to which a number is raised
11
Divisible by two
12
Part of a circle's circumference