横向
1
Reference line in a graph
3
Proven mathematical statement
4
Lines that never intersect
7
The number representing nothing
8
Corner point of a polygon
9
Amount of space an object occupies
10
Mathematical statement of equality
11
Sum divided by count
纵向
1
Part of a circle's circumference
2
Repeated addition
4
Number greater than zero
5
Result of multiplication
6
Number that divides evenly into another
8
Symbol representing unknown value