横向
1
Math using letters for unknown values
4
Number greater than zero
5
Collection of distinct elements
7
Distance from center to edge of circle
9
Space between two intersecting lines
纵向
1
Reference line in a graph
2
Result of multiplication
3
The number representing nothing
6
Round shape with all points equidistant
8
Line crossing from corner to corner
10
Power to which a number is raised