横向
1
Space between two intersecting lines
3
Rectangular array of numbers
4
Rectangle with four equal sides
5
Lines that never intersect
8
Number divisible only by 1 and itself
9
Total distance around a shape
10
Proven mathematical statement
纵向
2
Number less than zero
3
Repeated addition
6
Number that divides evenly into another
7
Symbol representing unknown value
11
Visual representation of data
12
Mathematical statement of equality