横向
1
Total distance around a shape
3
Closed shape with straight sides
9
Distance from center to edge of circle
10
Mathematical statement of equality
11
Rectangle with four equal sides
纵向
2
Middle value in an ordered dataset
4
Parts per hundred
5
Number that divides evenly into another
6
Round shape with all points equidistant
7
Divisible by two
8
Amount of space an object occupies