横向
1
Proven mathematical statement
6
Repeated addition
7
Math using letters for unknown values
8
Part of a line with two endpoints
10
Number greater than zero
11
Round shape with all points equidistant
12
Sum divided by count
纵向
2
Parts per hundred
3
Three-sided polygon
4
Total distance around a shape
5
Result of addition
9
Reference line in a graph