Across
1
Number less than zero
2
U-shaped curve of a quadratic function
5
Result of addition
6
The number representing nothing
7
Round shape with all points equidistant
8
Number divisible only by 1 and itself
9
Result of multiplication
Down
2
Number greater than zero
3
Steepness of a line
4
Repeated addition
10
Rectangular array of numbers
11
Result of raising a number to an exponent
12
Middle value in an ordered dataset