横向
1
Total distance around a shape
7
Line crossing from corner to corner
8
U-shaped curve of a quadratic function
9
Number greater than zero
10
Corner point of a polygon
11
Number with digits after a point
纵向
1
Closed shape with straight sides
2
Round shape with all points equidistant
3
Space between two intersecting lines
4
Rectangular array of numbers
5
Line segment connecting two circle points
6
Proven mathematical statement