横向
1
Corner point of a polygon
3
Distance from center to edge of circle
4
Middle value in an ordered dataset
6
Symbol representing unknown value
9
Result of multiplication
11
Number greater than zero
12
Number divisible only by 1 and itself
纵向
2
Total distance around a shape
5
Amount of space an object occupies
7
Proven mathematical statement
8
Line touching circle at one point
10
Reference line in a graph