横向
1
Part of a circle's circumference
3
Space between two intersecting lines
4
Number that divides evenly into another
7
Number with digits after a point
8
Proven mathematical statement
11
Number less than zero
纵向
2
Round shape with all points equidistant
5
Parts per hundred
6
Corner point of a polygon
9
Line touching circle at one point
10
Result of addition