Across
1
Mathematical statement of equality
2
U-shaped curve of a quadratic function
5
Exact correspondence on both sides
8
Round shape with all points equidistant
9
Space between two intersecting lines
Down
2
Lines that never intersect
3
Rectangle with four equal sides
4
Rectangular array of numbers
6
Mathematical rule or equation
7
Divisible by two
10
Number that divides evenly into another
11
The number representing nothing
12
Total distance around a shape