横向
1
Distance from center to edge of circle
3
Total distance around a shape
4
Corner point of a polygon
5
Number less than zero
9
Comparison of two quantities
11
Mathematical statement of equality
12
Middle value in an ordered dataset
纵向
2
Round shape with all points equidistant
3
Number divisible only by 1 and itself
6
Part of a whole number
7
Split into equal parts
8
System of ordered marks for measuring
10
Amount of space an object occupies
13
Divisible by two