横向
1
Line touching circle at one point
2
Result of addition
6
Parts per hundred
7
Space between two intersecting lines
10
Math using letters for unknown values
11
Repeated addition
纵向
2
Exact correspondence on both sides
3
Value that does not change
4
Mathematical statement of equality
5
Comparison of two quantities
8
Rectangle with four equal sides
9
Steepness of a line