answersLogoWhite

0

Let the number of sides be n and use the formula: 1/2n(n-3) = diagonals

1/2n(n-3) = 27

Multiply both sides by 2 and then form a quadratic equation:

n2-3n-54 = 0

Solving the above quadratic equation works out as:

n = -6 or n = 9 it must be the latter because the sides can't be negative

Therefore the polygon has 9 sides.

User Avatar

Wiki User

14y ago

Still curious? Ask our experts.

Chat with our AI personalities

JudyJudy
Simplicity is my specialty.
Chat with Judy
ViviVivi
Your ride-or-die bestie who's seen you through every high and low.
Chat with Vivi
TaigaTaiga
Every great hero faces trials, and you—yes, YOU—are no exception!
Chat with Taiga

Add your answer:

Earn +20 pts
Q: How many sides does a polygon have if it has 27 diagonals?
Write your answer...
Submit
Still have questions?
magnify glass
imp