横向
1
Number greater than zero
5
Number divisible only by 1 and itself
6
Part of a circle's circumference
7
Middle value in an ordered dataset
8
Line touching circle at one point
9
Part of a whole number
纵向
1
U-shaped curve of a quadratic function
2
Single numeral from 0 to 9
3
Reference line in a graph
4
Math using letters for unknown values
10
Result of addition
11
Repeated addition