横向
1
Distance from center to edge of circle
4
Total distance around a shape
5
Part of a circle's circumference
6
Number that divides evenly into another
9
Split into equal parts
纵向
2
Symbol representing unknown value
3
Comparison of two quantities
7
Steepness of a line
8
Single numeral from 0 to 9
10
Number with digits after a point