横向
1
The number representing nothing
3
Space between two intersecting lines
5
Part of a line with two endpoints
8
Three-sided polygon
纵向
2
Divisible by two
4
Symbol representing unknown value
6
Steepness of a line
7
Visual representation of data
The number representing nothing
Space between two intersecting lines
Part of a line with two endpoints
Three-sided polygon
Divisible by two
Symbol representing unknown value
Steepness of a line
Visual representation of data