横向
1
Exact correspondence on both sides
3
Mathematical statement of equality
6
Comparison of two quantities
9
Difference between highest and lowest values
10
Steepness of a line
13
Middle value in an ordered dataset
纵向
1
Part of a line with two endpoints
2
Round shape with all points equidistant
4
Closed shape with straight sides
5
Line touching circle at one point
7
Parts per hundred
8
Amount of space an object occupies
11
Divisible by two
12
The number representing nothing