横向
1
Number less than zero
5
Space between two intersecting lines
7
Number greater than zero
8
Rectangle with four equal sides
纵向
2
Split into equal parts
3
Divisible by two
4
Number with digits after a point
5
Part of a circle's circumference
6
Lines that never intersect
7
U-shaped curve of a quadratic function
9
The number representing nothing
10
Corner point of a polygon