横向
1
Line crossing from corner to corner
4
Proven mathematical statement
8
Math using letters for unknown values
9
Value that does not change
纵向
1
Single numeral from 0 to 9
2
Mathematical rule or equation
3
Mathematical statement of equality
5
Total distance around a shape
6
Three-sided polygon
7
Number that divides evenly into another
10
Steepness of a line
11
Round shape with all points equidistant
12
Rectangular array of numbers