Across
1
Three-sided polygon
6
Middle value in an ordered dataset
7
Number greater than zero
8
Difference between highest and lowest values
11
Line crossing from corner to corner
Down
2
Single numeral from 0 to 9
3
Round shape with all points equidistant
4
Space between two intersecting lines
5
Line touching circle at one point
9
Part of a line with two endpoints
10
Corner point of a polygon