Across
1
Mathematical statement of equality
5
Part of a line with two endpoints
7
Closed shape with straight sides
8
Steepness of a line
11
Symbol representing unknown value
12
Rectangular array of numbers
13
Visual representation of data
Down
2
Proven mathematical statement
3
Line crossing from corner to corner
4
Space between two intersecting lines
6
Reference line in a graph
9
Line touching circle at one point
10
Lines that never intersect
14
U-shaped curve of a quadratic function