横向
1
Result of multiplication
5
Corner point of a polygon
7
Symbol representing unknown value
8
Number divisible only by 1 and itself
9
The number representing nothing
10
Repeated addition
纵向
2
Steepness of a line
3
Part of a line with two endpoints
4
Number with digits after a point
6
Line segment connecting two circle points
8
Closed shape with straight sides
11
Difference between highest and lowest values
12
Mathematical rule or equation
13
Proven mathematical statement
14
Lines that never intersect