Across
1
Reference line in a graph
4
Part of a line with two endpoints
5
Closed shape with straight sides
6
Total distance around a shape
7
Steepness of a line
8
The number representing nothing
11
Mathematical rule or equation
13
Line segment connecting two circle points
Down
2
Difference between highest and lowest values
3
Distance from center to edge of circle
5
Parts per hundred
9
Part of a whole number
10
Visual representation of data
12
Repeated addition
14
Divisible by two