横向
1
Middle value in an ordered dataset
4
Steepness of a line
5
Symbol representing unknown value
7
Space between two intersecting lines
9
Collection of distinct elements
纵向
2
Corner point of a polygon
3
Line touching circle at one point
4
Exact correspondence on both sides
6
Result of raising a number to an exponent
8
Sum divided by count
10
System of ordered marks for measuring