横向
1
Symbol representing unknown value
4
Part of a circle's circumference
6
Three-sided polygon
7
Amount of space an object occupies
9
Visual representation of data
纵向
2
Sum divided by count
3
Middle value in an ordered dataset
5
Number divisible only by 1 and itself
8
Line segment connecting two circle points
10
Line crossing from corner to corner
11
Closed shape with straight sides
12
Distance from center to edge of circle