横向
1
Rectangle with four equal sides
4
Mathematical statement of equality
7
Lines that never intersect
8
Sum divided by count
9
Number that divides evenly into another
纵向
1
Exact correspondence on both sides
2
Result of multiplication
3
Proven mathematical statement
5
Line crossing from corner to corner
6
U-shaped curve of a quadratic function
10
Rectangular array of numbers
11
Distance from center to edge of circle
12
Mathematical rule or equation