横向
1
Distance from center to edge of circle
5
Mathematical rule or equation
7
Math using letters for unknown values
8
Number divisible only by 1 and itself
9
Proven mathematical statement
纵向
2
Steepness of a line
3
Number greater than zero
4
Corner point of a polygon
6
Middle value in an ordered dataset
10
Line segment connecting two circle points
11
Visual representation of data
12
System of ordered marks for measuring
13
Result of multiplication