横向
1
Steepness of a line
3
Difference between highest and lowest values
4
Closed shape with straight sides
7
U-shaped curve of a quadratic function
8
Mathematical rule or equation
纵向
2
Corner point of a polygon
4
Lines that never intersect
5
Space between two intersecting lines
6
Exact correspondence on both sides
9
Divisible by two
10
Round shape with all points equidistant