横向
1
Round shape with all points equidistant
5
Collection of distinct elements
6
Visual representation of data
7
Proven mathematical statement
9
Space between two intersecting lines
10
Math using letters for unknown values
11
Three-sided polygon
12
Part of a whole number
纵向
2
System of ordered marks for measuring
3
Corner point of a polygon
4
Line touching circle at one point
8
Comparison of two quantities
13
Difference between highest and lowest values