横向
1
Sum divided by count
4
U-shaped curve of a quadratic function
6
Three-sided polygon
10
Distance from center to edge of circle
12
Amount of space an object occupies
纵向
2
Middle value in an ordered dataset
3
Visual representation of data
5
Split into equal parts
7
Math using letters for unknown values
8
Repeated addition
9
Space between two intersecting lines
11
Exact correspondence on both sides