横向
1
Result of addition
3
Power to which a number is raised
4
Number greater than zero
8
U-shaped curve of a quadratic function
12
Distance from center to edge of circle
纵向
2
Rectangular array of numbers
4
Result of multiplication
5
Reference line in a graph
6
Number less than zero
7
Result of raising a number to an exponent
9
Corner point of a polygon
10
Number divisible only by 1 and itself
11
Lines that never intersect