Across
1
Longest side of a right triangle
5
Number less than zero
6
Number with digits after a point
9
Three-sided polygon
10
Number that divides evenly into another
12
Sum divided by count
Down
2
Divisible by two
3
Visual representation of data
4
Split into equal parts
7
Closed shape with straight sides
8
Part of a line with two endpoints
11
The number representing nothing
13
Round shape with all points equidistant