横向
1
Three-sided polygon
5
Part of a circle's circumference
6
Parts per hundred
7
Number with digits after a point
8
Part of a line with two endpoints
12
Proven mathematical statement
纵向
2
Number divisible only by 1 and itself
3
Line crossing from corner to corner
4
Longest side of a right triangle
9
Space between two intersecting lines
10
Part of a whole number
11
Power to which a number is raised