横向
1
Sum divided by count
4
Rectangular array of numbers
5
Corner point of a polygon
7
Divisible by two
8
Result of raising a number to an exponent
纵向
1
Part of a circle's circumference
2
The number representing nothing
3
Part of a line with two endpoints
4
Middle value in an ordered dataset
6
Comparison of two quantities
9
Number less than zero