Across
1
Longest side of a right triangle
2
Split into equal parts
5
Part of a circle's circumference
6
Mathematical rule or equation
9
Mathematical statement of equality
10
Difference between highest and lowest values
11
Collection of distinct elements
Down
2
Line crossing from corner to corner
3
Middle value in an ordered dataset
4
Parts per hundred
7
Reference line in a graph
8
Number greater than zero