Across
1
Number with digits after a point
5
Value that does not change
6
Closed shape with straight sides
7
Difference between highest and lowest values
8
Symbol representing unknown value
9
Collection of distinct elements
11
Part of a circle's circumference
13
Number that divides evenly into another
Down
2
Rectangle with four equal sides
3
U-shaped curve of a quadratic function
4
Round shape with all points equidistant
5
Line segment connecting two circle points
10
Middle value in an ordered dataset
12
Line touching circle at one point