横向
1
Mathematical rule or equation
4
Total distance around a shape
6
Line touching circle at one point
7
Number greater than zero
8
Sum divided by count
纵向
2
Symbol representing unknown value
3
Math using letters for unknown values
5
Repeated addition
9
Part of a whole number
10
Steepness of a line
11
Lines that never intersect
12
Middle value in an ordered dataset
13
Number with digits after a point
14
Split into equal parts