横向
1
U-shaped curve of a quadratic function
3
Result of addition
4
Part of a line with two endpoints
7
Number with digits after a point
8
Sum divided by count
9
Reference line in a graph
10
Line segment connecting two circle points
12
Part of a circle's circumference
纵向
1
Total distance around a shape
2
Three-sided polygon
5
Comparison of two quantities
6
Number that divides evenly into another
11
Rectangle with four equal sides
13
Number greater than zero