横向
1
Total distance around a shape
4
Exact correspondence on both sides
6
Longest side of a right triangle
9
Number divisible only by 1 and itself
12
Reference line in a graph
纵向
2
Steepness of a line
3
Divisible by two
4
Collection of distinct elements
5
Distance from center to edge of circle
7
Comparison of two quantities
8
Middle value in an ordered dataset
10
Proven mathematical statement
11
Line crossing from corner to corner