横向
1
Number greater than zero
4
Math using letters for unknown values
5
Sum divided by count
6
Result of raising a number to an exponent
7
Power to which a number is raised
10
Line crossing from corner to corner
14
Difference between highest and lowest values
纵向
2
Mathematical statement of equality
3
The number representing nothing
6
Parts per hundred
8
Collection of distinct elements
9
Line segment connecting two circle points
11
Corner point of a polygon
12
Number divisible only by 1 and itself
13
Middle value in an ordered dataset