横向
1
Part of a circle's circumference
4
Repeated addition
6
Three-sided polygon
8
Power to which a number is raised
9
Symbol representing unknown value
纵向
2
Number less than zero
3
Number with digits after a point
5
Visual representation of data
7
Lines that never intersect
10
Closed shape with straight sides
11
The number representing nothing
12
Divisible by two