Across
1
Space between two intersecting lines
3
Closed shape with straight sides
4
The number representing nothing
6
Part of a circle's circumference
8
Line crossing from corner to corner
Down
2
Single numeral from 0 to 9
3
Number greater than zero
5
Number with digits after a point
7
Rectangular array of numbers
9
Reference line in a graph
10
Value that does not change