横向
1
Reference line in a graph
4
Lines that never intersect
5
Value that does not change
6
Visual representation of data
9
Sum divided by count
纵向
2
U-shaped curve of a quadratic function
3
Number less than zero
4
Number divisible only by 1 and itself
7
The number representing nothing
8
Amount of space an object occupies
10
Round shape with all points equidistant
11
Parts per hundred