横向
1
Number divisible only by 1 and itself
4
Mathematical statement of equality
5
Total distance around a shape
10
Symbol representing unknown value
12
Single numeral from 0 to 9
13
Part of a line with two endpoints
纵向
2
Difference between highest and lowest values
3
The number representing nothing
6
Collection of distinct elements
7
Line segment connecting two circle points
8
Line crossing from corner to corner
9
Middle value in an ordered dataset
11
Part of a whole number
14
Mathematical rule or equation