横向
1
Single numeral from 0 to 9
4
Amount of space an object occupies
5
Mathematical rule or equation
6
Comparison of two quantities
11
Value that does not change
12
Round shape with all points equidistant
纵向
2
Total distance around a shape
3
Reference line in a graph
7
Number greater than zero
8
Number less than zero
9
Middle value in an ordered dataset
10
Symbol representing unknown value