Across
1
Middle value in an ordered dataset
4
Mathematical statement of equality
5
The number representing nothing
7
Number greater than zero
9
Line touching circle at one point
10
Total distance around a shape
12
Line crossing from corner to corner
Down
2
Space between two intersecting lines
3
U-shaped curve of a quadratic function
6
Result of raising a number to an exponent
7
Closed shape with straight sides
8
Result of multiplication
11
Result of addition