横向
1
Value that does not change
3
The number representing nothing
6
Repeated addition
7
Reference line in a graph
8
Difference between highest and lowest values
纵向
2
Closed shape with straight sides
4
Part of a whole number
5
Math using letters for unknown values
6
Middle value in an ordered dataset
9
Line touching circle at one point
10
Steepness of a line