横向
1
Corner point of a polygon
4
Part of a circle's circumference
5
Reference line in a graph
6
Steepness of a line
7
Mathematical rule or equation
9
Part of a line with two endpoints
纵向
2
Total distance around a shape
3
Result of raising a number to an exponent
6
Rectangle with four equal sides
8
Round shape with all points equidistant