Across
1
Three-sided polygon
4
Rectangular array of numbers
6
Part of a whole number
8
Middle value in an ordered dataset
9
Value that does not change
11
Steepness of a line
12
Longest side of a right triangle
13
U-shaped curve of a quadratic function
Down
1
Line touching circle at one point
2
Closed shape with straight sides
3
Number less than zero
5
Comparison of two quantities
7
Line crossing from corner to corner
10
Visual representation of data