横向
1
Lines that never intersect
5
Corner point of a polygon
6
Value that does not change
7
The number representing nothing
9
Mathematical statement of equality
10
Number divisible only by 1 and itself
11
Mathematical rule or equation
纵向
2
Visual representation of data
3
Part of a whole number
4
Divisible by two
8
Line crossing from corner to corner
12
Rectangular array of numbers
13
Sum divided by count