横向
1
Number with digits after a point
4
Lines that never intersect
5
Closed shape with straight sides
6
Part of a whole number
7
Number greater than zero
纵向
2
Amount of space an object occupies
3
U-shaped curve of a quadratic function
4
Result of multiplication
7
Number divisible only by 1 and itself
8
Round shape with all points equidistant
9
The number representing nothing