Across
1
Mathematical rule or equation
5
Corner point of a polygon
7
System of ordered marks for measuring
8
Line touching circle at one point
9
Middle value in an ordered dataset
Down
1
Part of a whole number
2
Rectangle with four equal sides
3
Distance from center to edge of circle
4
U-shaped curve of a quadratic function
6
Collection of distinct elements
10
Repeated addition
11
Round shape with all points equidistant