横向
1
Exact correspondence on both sides
4
Space between two intersecting lines
7
Mathematical statement of equality
8
Closed shape with straight sides
9
Middle value in an ordered dataset
10
Round shape with all points equidistant
11
Visual representation of data
纵向
1
Part of a line with two endpoints
2
Lines that never intersect
3
Amount of space an object occupies
5
The number representing nothing
6
Power to which a number is raised