横向
1
Math using letters for unknown values
4
Number with digits after a point
6
Space between two intersecting lines
7
Part of a whole number
9
Distance from center to edge of circle
纵向
1
Sum divided by count
2
Part of a line with two endpoints
3
Three-sided polygon
5
Exact correspondence on both sides
8
Number that divides evenly into another
10
U-shaped curve of a quadratic function