横向
1
Three-sided polygon
6
Split into equal parts
7
Total distance around a shape
8
Difference between highest and lowest values
10
Value that does not change
11
Number that divides evenly into another
12
Divisible by two
纵向
2
Collection of distinct elements
3
Comparison of two quantities
4
Middle value in an ordered dataset
5
Power to which a number is raised
9
Math using letters for unknown values
13
Sum divided by count
14
Round shape with all points equidistant
15
Distance from center to edge of circle