Across
1
Three-sided polygon
5
Closed shape with straight sides
6
Mathematical rule or equation
7
Parts per hundred
8
Distance from center to edge of circle
9
Difference between highest and lowest values
Down
2
Middle value in an ordered dataset
3
Collection of distinct elements
4
Single numeral from 0 to 9
5
Lines that never intersect
10
Number with digits after a point