横向
1
Line touching circle at one point
5
Proven mathematical statement
6
Total distance around a shape
8
Amount of space an object occupies
12
Number less than zero
纵向
2
The number representing nothing
3
Value that does not change
4
Single numeral from 0 to 9
6
Result of raising a number to an exponent
7
Symbol representing unknown value
9
Difference between highest and lowest values
10
Part of a line with two endpoints
11
Divisible by two