横向
1
U-shaped curve of a quadratic function
5
Parts per hundred
8
Math using letters for unknown values
9
Number with digits after a point
10
Part of a whole number
11
Amount of space an object occupies
纵向
2
Steepness of a line
3
Number greater than zero
4
Value that does not change
6
Corner point of a polygon
7
Sum divided by count
12
Line touching circle at one point