Across
1
Distance from center to edge of circle
4
Proven mathematical statement
5
Sum divided by count
6
Single numeral from 0 to 9
9
Difference between highest and lowest values
11
Visual representation of data
Down
2
Number less than zero
3
Part of a line with two endpoints
7
Rectangle with four equal sides
8
U-shaped curve of a quadratic function
10
Collection of distinct elements
12
Split into equal parts