横向
1
Steepness of a line
5
Mathematical rule or equation
6
Divisible by two
7
Part of a whole number
9
Number less than zero
10
Sum divided by count
11
Proven mathematical statement
纵向
2
Number with digits after a point
3
Split into equal parts
4
U-shaped curve of a quadratic function
8
Line segment connecting two circle points
12
Symbol representing unknown value