横向
1
Single numeral from 0 to 9
2
Exact correspondence on both sides
4
Rectangular array of numbers
5
Part of a circle's circumference
6
Longest side of a right triangle
12
Number with digits after a point
13
Lines that never intersect
纵向
2
Part of a line with two endpoints
3
Line touching circle at one point
7
Distance from center to edge of circle
8
Comparison of two quantities
9
Total distance around a shape
10
Round shape with all points equidistant
11
Split into equal parts