Across
1
Rectangle with four equal sides
3
Total distance around a shape
4
Number less than zero
5
Rectangular array of numbers
Down
1
Collection of distinct elements
2
Proven mathematical statement
6
Three-sided polygon
7
Repeated addition
8
Longest side of a right triangle
9
Round shape with all points equidistant
10
Visual representation of data
11
Amount of space an object occupies
12
Comparison of two quantities