横向
1
Mathematical statement of equality
4
Number greater than zero
6
Symbol representing unknown value
7
Power to which a number is raised
11
Distance from center to edge of circle
12
Number that divides evenly into another
纵向
2
Total distance around a shape
3
Part of a circle's circumference
4
U-shaped curve of a quadratic function
5
Single numeral from 0 to 9
8
Exact correspondence on both sides
9
Divisible by two
10
Amount of space an object occupies
13
Corner point of a polygon