横向
1
Number with digits after a point
4
Difference between highest and lowest values
5
U-shaped curve of a quadratic function
7
Number that divides evenly into another
9
Collection of distinct elements
10
Middle value in an ordered dataset
13
Number greater than zero
纵向
2
Three-sided polygon
3
Visual representation of data
6
Round shape with all points equidistant
8
Mathematical rule or equation
11
The number representing nothing
12
Lines that never intersect