横向
1
Math using letters for unknown values
4
Parts per hundred
8
Mathematical statement of equality
11
Number divisible only by 1 and itself
13
Divisible by two
纵向
2
Middle value in an ordered dataset
3
U-shaped curve of a quadratic function
5
Number less than zero
6
Visual representation of data
7
Round shape with all points equidistant
9
Steepness of a line
10
Space between two intersecting lines
12
Reference line in a graph
14
Value that does not change