横向
1
Round shape with all points equidistant
3
Line crossing from corner to corner
4
Exact correspondence on both sides
5
Divisible by two
6
Amount of space an object occupies
9
Single numeral from 0 to 9
纵向
2
Rectangular array of numbers
3
Split into equal parts
7
Middle value in an ordered dataset
8
Lines that never intersect