Across
1
Mathematical rule or equation
3
Corner point of a polygon
4
Mathematical statement of equality
6
Visual representation of data
7
System of ordered marks for measuring
9
Number with digits after a point
10
Math using letters for unknown values
11
Part of a line with two endpoints
Down
2
Sum divided by count
5
Round shape with all points equidistant
8
Value that does not change
12
Result of addition
13
Parts per hundred