Across
1
Part of a line with two endpoints
4
System of ordered marks for measuring
5
Space between two intersecting lines
6
Total distance around a shape
8
Collection of distinct elements
9
Reference line in a graph
10
Power to which a number is raised
Down
2
Parts per hundred
3
Number greater than zero
4
Exact correspondence on both sides
6
Number divisible only by 1 and itself
7
Line segment connecting two circle points