Across
1
Middle value in an ordered dataset
2
Result of addition
4
Number that divides evenly into another
6
System of ordered marks for measuring
8
The number representing nothing
9
Power to which a number is raised
Down
2
Part of a line with two endpoints
3
Part of a circle's circumference
5
Divisible by two
6
Collection of distinct elements
7
Reference line in a graph