Across
1
Distance from center to edge of circle
4
Part of a circle's circumference
5
Result of multiplication
7
Total distance around a shape
11
Value that does not change
12
Visual representation of data
13
Lines that never intersect
Down
2
Exact correspondence on both sides
3
Comparison of two quantities
6
Three-sided polygon
8
Number with digits after a point
9
Corner point of a polygon
10
Sum divided by count