Across
1
Rectangle with four equal sides
5
Number with digits after a point
6
Rectangular array of numbers
7
U-shaped curve of a quadratic function
9
Comparison of two quantities
Down
2
Number greater than zero
3
Visual representation of data
4
Line touching circle at one point
5
Single numeral from 0 to 9
8
Symbol representing unknown value
10
Part of a circle's circumference
11
Total distance around a shape
12
Space between two intersecting lines
13
Sum divided by count