横向
1
Reference line in a graph
3
Closed shape with straight sides
4
Corner point of a polygon
8
Mathematical statement of equality
10
Number that divides evenly into another
纵向
2
Symbol representing unknown value
3
Number greater than zero
5
Number less than zero
6
Round shape with all points equidistant
7
Line crossing from corner to corner
9
Line segment connecting two circle points
11
Part of a line with two endpoints
12
Difference between highest and lowest values