横向
1
Line touching circle at one point
6
The number representing nothing
7
Distance from center to edge of circle
纵向
2
Repeated addition
3
Three-sided polygon
4
Divisible by two
5
Mathematical statement of equality
8
Value that does not change
Line touching circle at one point
The number representing nothing
Distance from center to edge of circle
Repeated addition
Three-sided polygon
Divisible by two
Mathematical statement of equality
Value that does not change