横向
1
Closed shape with straight sides
4
Symbol representing unknown value
7
Total distance around a shape
9
Number with digits after a point
10
Round shape with all points equidistant
11
Result of multiplication
12
Amount of space an object occupies
13
Rectangular array of numbers
14
Divisible by two
纵向
2
Sum divided by count
3
Mathematical statement of equality
5
Repeated addition
6
Number less than zero
8
The number representing nothing