横向
1
Total distance around a shape
3
Space between two intersecting lines
6
Longest side of a right triangle
7
Closed shape with straight sides
11
The number representing nothing
纵向
2
Rectangular array of numbers
3
Part of a circle's circumference
4
Power to which a number is raised
5
Comparison of two quantities
8
Repeated addition
9
Visual representation of data
10
Lines that never intersect