Across
1
Closed shape with straight sides
4
Distance from center to edge of circle
7
Three-sided polygon
9
Difference between highest and lowest values
10
Line segment connecting two circle points
11
U-shaped curve of a quadratic function
12
Divisible by two
Down
2
Visual representation of data
3
Number less than zero
5
Line touching circle at one point
6
Lines that never intersect
8
Space between two intersecting lines