Across
1
Lines that never intersect
3
Line segment connecting two circle points
6
System of ordered marks for measuring
7
Number greater than zero
8
Parts per hundred
9
Number with digits after a point
10
Reference line in a graph
Down
2
Sum divided by count
4
Round shape with all points equidistant
5
Number less than zero
11
Value that does not change
12
Distance from center to edge of circle