横向
1
Parts per hundred
6
Number with digits after a point
7
Number less than zero
8
Steepness of a line
12
Line segment connecting two circle points
纵向
2
Proven mathematical statement
3
Repeated addition
4
Three-sided polygon
5
Round shape with all points equidistant
9
Lines that never intersect
10
Result of multiplication
11
Sum divided by count