横向
1
Mathematical rule or equation
2
Part of a line with two endpoints
4
Three-sided polygon
5
System of ordered marks for measuring
6
Lines that never intersect
8
Total distance around a shape
9
Number less than zero
11
Line segment connecting two circle points
纵向
2
Exact correspondence on both sides
3
Sum divided by count
6
Result of raising a number to an exponent
7
Split into equal parts
10
The number representing nothing