Across
1
U-shaped curve of a quadratic function
5
Parts per hundred
6
Middle value in an ordered dataset
7
Corner point of a polygon
8
Value that does not change
10
Number with digits after a point
11
The number representing nothing
12
Result of multiplication
Down
2
Sum divided by count
3
Number that divides evenly into another
4
Round shape with all points equidistant
9
Mathematical statement of equality