Across
1
System of ordered marks for measuring
3
Closed shape with straight sides
4
Middle value in an ordered dataset
5
Line touching circle at one point
6
Proven mathematical statement
7
Split into equal parts
8
Mathematical rule or equation
11
Distance from center to edge of circle
Down
1
Part of a line with two endpoints
2
Part of a circle's circumference
3
U-shaped curve of a quadratic function
9
Mathematical statement of equality
10
Sum divided by count