Diagonal is a line segment connecting two non-adjacent vertices of a polygon.
The number of diagonals of a polygon of n sides can be found using the formula
In the example shown, AC is a diagonal.
A. 29.40 ft
B. 28.40 ft
C. 27.16 ft
D. 28.28 ft
Correct Answer: D
Step 1: Side length of the square field is s = 20 ft.
Step 2: Distance that Justin walked = Length of the diagonal of the square field = = 28.28 ft.