Across
1
Difference between highest and lowest values
4
Collection of distinct elements
5
Lines that never intersect
6
Reference line in a graph
7
Closed shape with straight sides
11
Parts per hundred
12
Exact correspondence on both sides
Down
2
Part of a whole number
3
Rectangle with four equal sides
8
The number representing nothing
9
Part of a circle's circumference
10
Rectangular array of numbers
13
Divisible by two
14
System of ordered marks for measuring