Across
1
Closed shape with straight sides
3
Part of a circle's circumference
5
Total distance around a shape
6
Number divisible only by 1 and itself
9
Mathematical rule or equation
10
Difference between highest and lowest values
11
Corner point of a polygon
12
The number representing nothing
13
Middle value in an ordered dataset
Down
2
Visual representation of data
4
Math using letters for unknown values
7
Power to which a number is raised
8
Mathematical statement of equality
14
Proven mathematical statement