Across
1
Part of a circle's circumference
3
Result of addition
5
Total distance around a shape
6
Math using letters for unknown values
7
Corner point of a polygon
13
Line segment connecting two circle points
Down
2
Rectangular array of numbers
4
Number that divides evenly into another
5
Number greater than zero
8
Visual representation of data
9
Three-sided polygon
10
Distance from center to edge of circle
11
Steepness of a line
12
Rectangle with four equal sides