横向
1
Number less than zero
3
Result of multiplication
6
Mathematical statement of equality
7
Number that divides evenly into another
8
Sum divided by count
12
Part of a circle's circumference
纵向
2
Distance from center to edge of circle
3
Parts per hundred
4
Lines that never intersect
5
Exact correspondence on both sides
9
U-shaped curve of a quadratic function
10
Comparison of two quantities
11
Math using letters for unknown values