横向
1
U-shaped curve of a quadratic function
3
Exact correspondence on both sides
5
Line touching circle at one point
7
Part of a whole number
8
Part of a circle's circumference
纵向
2
Line segment connecting two circle points
3
Rectangle with four equal sides
4
Math using letters for unknown values
6
Comparison of two quantities
9
Number less than zero
10
Line crossing from corner to corner
11
Difference between highest and lowest values