Across
1
Longest side of a right triangle
5
Part of a whole number
6
Rectangular array of numbers
7
Part of a line with two endpoints
9
U-shaped curve of a quadratic function
10
Math using letters for unknown values
Down
2
Difference between highest and lowest values
3
Lines that never intersect
4
Reference line in a graph
8
Collection of distinct elements
11
Divisible by two