Across
1
Part of a circle's circumference
3
Number greater than zero
4
Middle value in an ordered dataset
5
Three-sided polygon
6
Symbol representing unknown value
7
Visual representation of data
12
Amount of space an object occupies
Down
2
Line touching circle at one point
3
Lines that never intersect
8
Distance from center to edge of circle
9
Longest side of a right triangle
10
Rectangular array of numbers
11
Round shape with all points equidistant