Across
1
Number that divides evenly into another
3
Total distance around a shape
5
Proven mathematical statement
9
Collection of distinct elements
10
Round shape with all points equidistant
Down
2
Difference between highest and lowest values
3
Number divisible only by 1 and itself
4
Line touching circle at one point
6
U-shaped curve of a quadratic function
7
Mathematical rule or equation
8
Exact correspondence on both sides
10
Value that does not change
11
Distance from center to edge of circle