横向
1
Space between two intersecting lines
4
Longest side of a right triangle
6
The number representing nothing
9
Part of a line with two endpoints
10
U-shaped curve of a quadratic function
11
Difference between highest and lowest values
纵向
2
Distance from center to edge of circle
3
Power to which a number is raised
5
Number with digits after a point
7
Line crossing from corner to corner
8
Symbol representing unknown value