横向
1
Total distance around a shape
3
Space between two intersecting lines
4
Visual representation of data
5
Value that does not change
6
Mathematical rule or equation
8
Amount of space an object occupies
纵向
2
Exact correspondence on both sides
3
Part of a circle's circumference
5
Round shape with all points equidistant
7
Number with digits after a point
9
Three-sided polygon