横向
1
Repeated addition
3
Rectangle with four equal sides
4
Result of multiplication
纵向
2
Closed shape with straight sides
3
Steepness of a line
5
Result of addition
6
Round shape with all points equidistant
7
Part of a circle's circumference
Repeated addition
Rectangle with four equal sides
Result of multiplication
Closed shape with straight sides
Steepness of a line
Result of addition
Round shape with all points equidistant
Part of a circle's circumference