横向
1
Split into equal parts
3
Line touching circle at one point
4
Three-sided polygon
8
Closed shape with straight sides
9
U-shaped curve of a quadratic function
11
Divisible by two
13
Power to which a number is raised
纵向
2
Part of a line with two endpoints
5
Total distance around a shape
6
Value that does not change
7
Math using letters for unknown values
10
Number divisible only by 1 and itself
12
Mathematical statement of equality