Across
1
Collection of distinct elements
3
Reference line in a graph
4
Comparison of two quantities
6
Repeated addition
9
Space between two intersecting lines
11
Closed shape with straight sides
13
Amount of space an object occupies
Down
2
Line touching circle at one point
5
Mathematical rule or equation
7
Total distance around a shape
8
Sum divided by count
10
Distance from center to edge of circle
12
Visual representation of data