Across
1
Exact correspondence on both sides
3
Number greater than zero
5
Result of multiplication
6
Reference line in a graph
8
Visual representation of data
9
Rectangular array of numbers
10
Sum divided by count
11
Line crossing from corner to corner
12
Rectangle with four equal sides
Down
2
Longest side of a right triangle
3
U-shaped curve of a quadratic function
4
Space between two intersecting lines
7
Repeated addition