Across
1
Rectangular array of numbers
2
Sum divided by count
3
Steepness of a line
5
Visual representation of data
6
Exact correspondence on both sides
9
Symbol representing unknown value
Down
1
Repeated addition
2
Reference line in a graph
4
Part of a line with two endpoints
7
Line segment connecting two circle points
8
Amount of space an object occupies
10
Part of a circle's circumference