横向
1
Lines that never intersect
4
Number that divides evenly into another
7
Number less than zero
10
Round shape with all points equidistant
纵向
2
Reference line in a graph
3
Number with digits after a point
5
Divisible by two
6
Line crossing from corner to corner
8
The number representing nothing
9
Corner point of a polygon
11
Parts per hundred