横向
1
Math using letters for unknown values
4
Rectangle with four equal sides
5
Mathematical rule or equation
7
Rectangular array of numbers
纵向
2
Comparison of two quantities
3
The number representing nothing
4
Exact correspondence on both sides
6
Lines that never intersect
8
Power to which a number is raised
9
Proven mathematical statement
10
Reference line in a graph
11
Mathematical statement of equality