横向
1
Line segment connecting two circle points
3
Three-sided polygon
4
Number less than zero
7
Divisible by two
8
Math using letters for unknown values
11
Difference between highest and lowest values
纵向
1
Value that does not change
2
Middle value in an ordered dataset
5
Steepness of a line
6
Result of raising a number to an exponent
9
Parts per hundred
10
Exact correspondence on both sides