横向
1
Three-sided polygon
4
Single numeral from 0 to 9
5
Round shape with all points equidistant
8
Result of raising a number to an exponent
纵向
2
Exact correspondence on both sides
3
Mathematical statement of equality
4
Split into equal parts
6
Space between two intersecting lines
7
Longest side of a right triangle
9
Total distance around a shape