Across
1
Closed shape with straight sides
5
Part of a line with two endpoints
6
Number with digits after a point
9
Mathematical statement of equality
13
Line crossing from corner to corner
14
Visual representation of data
15
Middle value in an ordered dataset
Down
2
Value that does not change
3
Comparison of two quantities
4
Exact correspondence on both sides
7
Reference line in a graph
8
The number representing nothing
10
Math using letters for unknown values
11
Rectangle with four equal sides
12
Line segment connecting two circle points