横向
1
Round shape with all points equidistant
4
Reference line in a graph
5
Sum divided by count
7
Proven mathematical statement
8
Math using letters for unknown values
10
Longest side of a right triangle
11
Power to which a number is raised
12
Result of addition
纵向
2
Exact correspondence on both sides
3
Mathematical rule or equation
6
Corner point of a polygon
9
Result of multiplication