横向
1
Total distance around a shape
6
Closed shape with straight sides
7
Proven mathematical statement
8
Space between two intersecting lines
9
Number with digits after a point
10
Lines that never intersect
纵向
1
Result of multiplication
2
Amount of space an object occupies
3
Repeated addition
4
U-shaped curve of a quadratic function
5
Longest side of a right triangle
11
Line touching circle at one point
12
Mathematical statement of equality