Across
1
Proven mathematical statement
4
Reference line in a graph
6
Visual representation of data
8
Line touching circle at one point
9
Rectangle with four equal sides
11
Result of addition
12
Steepness of a line
14
Part of a whole number
Down
2
Rectangular array of numbers
3
Lines that never intersect
5
Middle value in an ordered dataset
7
System of ordered marks for measuring
10
Number that divides evenly into another
13
Space between two intersecting lines
15
Line crossing from corner to corner