横向
1
Mathematical statement of equality
4
Result of addition
6
Result of multiplication
7
Collection of distinct elements
11
Corner point of a polygon
12
Number less than zero
纵向
2
Longest side of a right triangle
3
Line touching circle at one point
5
Number with digits after a point
8
Power to which a number is raised
9
The number representing nothing
10
Split into equal parts
13
Distance from center to edge of circle