横向
1
Line crossing from corner to corner
5
Number less than zero
6
Collection of distinct elements
7
Mathematical rule or equation
11
Steepness of a line
12
Visual representation of data
纵向
2
Amount of space an object occupies
3
Repeated addition
4
Middle value in an ordered dataset
8
Math using letters for unknown values
9
Line touching circle at one point
10
Line segment connecting two circle points