Across
1
Rectangle with four equal sides
4
Difference between highest and lowest values
5
Amount of space an object occupies
9
Number greater than zero
10
Rectangular array of numbers
11
System of ordered marks for measuring
12
Collection of distinct elements
13
Power to which a number is raised
Down
2
U-shaped curve of a quadratic function
3
Divisible by two
6
Longest side of a right triangle
7
Middle value in an ordered dataset
8
Parts per hundred