Across
1
Difference between highest and lowest values
3
Closed shape with straight sides
4
Exact correspondence on both sides
5
Reference line in a graph
6
Divisible by two
7
Number greater than zero
10
Mathematical statement of equality
12
Power to which a number is raised
Down
2
Sum divided by count
3
Number divisible only by 1 and itself
4
Part of a line with two endpoints
8
Line segment connecting two circle points
9
Part of a whole number
11
Number less than zero