横向
1
U-shaped curve of a quadratic function
3
Part of a line with two endpoints
7
Line segment connecting two circle points
10
Comparison of two quantities
纵向
2
Part of a whole number
4
Rectangle with four equal sides
5
Amount of space an object occupies
6
Part of a circle's circumference
8
Reference line in a graph
9
Line crossing from corner to corner
11
Three-sided polygon