Across
1
Round shape with all points equidistant
4
Middle value in an ordered dataset
5
Single numeral from 0 to 9
6
Distance from center to edge of circle
7
U-shaped curve of a quadratic function
11
Repeated addition
Down
1
Line segment connecting two circle points
2
Proven mathematical statement
3
Line crossing from corner to corner
8
Comparison of two quantities
9
Rectangular array of numbers
10
Lines that never intersect