横向
1
Number with digits after a point
4
Power to which a number is raised
5
The number representing nothing
6
Sum divided by count
8
Round shape with all points equidistant
纵向
2
Steepness of a line
3
Three-sided polygon
7
Split into equal parts
9
Middle value in an ordered dataset
10
U-shaped curve of a quadratic function
11
Number divisible only by 1 and itself