横向
1
System of ordered marks for measuring
4
Total distance around a shape
7
Steepness of a line
10
Parts per hundred
11
Number less than zero
12
Number divisible only by 1 and itself
纵向
2
Distance from center to edge of circle
3
Corner point of a polygon
4
Number greater than zero
5
Mathematical statement of equality
6
Round shape with all points equidistant
8
Exact correspondence on both sides
9
Number that divides evenly into another