横向
1
Result of multiplication
4
Mathematical statement of equality
6
Rectangular array of numbers
9
Number with digits after a point
纵向
2
Collection of distinct elements
3
Middle value in an ordered dataset
5
Math using letters for unknown values
7
Repeated addition
8
Mathematical rule or equation
10
Line touching circle at one point
11
Comparison of two quantities
12
Corner point of a polygon
13
Split into equal parts