横向
1
Exact correspondence on both sides
5
Math using letters for unknown values
6
Split into equal parts
7
Comparison of two quantities
8
Part of a line with two endpoints
纵向
1
Steepness of a line
2
Number with digits after a point
3
Space between two intersecting lines
4
Corner point of a polygon
9
Longest side of a right triangle
10
The number representing nothing
11
Parts per hundred