横向
1
Proven mathematical statement
5
Symbol representing unknown value
纵向
2
Line segment connecting two circle points
3
Number less than zero
4
Mathematical rule or equation
6
Lines that never intersect
7
Divisible by two
8
Reference line in a graph
Proven mathematical statement
Symbol representing unknown value
Line segment connecting two circle points
Number less than zero
Mathematical rule or equation
Lines that never intersect
Divisible by two
Reference line in a graph