横向
1
Number divisible only by 1 and itself
4
Symbol representing unknown value
5
Part of a whole number
6
Part of a line with two endpoints
7
Visual representation of data
纵向
1
Number greater than zero
2
Number less than zero
3
Space between two intersecting lines
8
Value that does not change
9
Single numeral from 0 to 9
10
Line crossing from corner to corner
11
Proven mathematical statement
12
Three-sided polygon