横向
1
Round shape with all points equidistant
5
Space between two intersecting lines
6
The number representing nothing
7
Collection of distinct elements
9
Amount of space an object occupies
10
Distance from center to edge of circle
11
Comparison of two quantities
12
Value that does not change
纵向
2
Visual representation of data
3
Mathematical statement of equality
4
Line crossing from corner to corner
8
Number that divides evenly into another