横向
1
Power to which a number is raised
5
Split into equal parts
7
Number less than zero
8
Number divisible only by 1 and itself
11
Amount of space an object occupies
13
Space between two intersecting lines
纵向
2
Total distance around a shape
3
Divisible by two
4
U-shaped curve of a quadratic function
6
Exact correspondence on both sides
9
Mathematical rule or equation
10
Number with digits after a point
12
The number representing nothing