Short cut to find number of Diagonals in a Polygon

In this videos I told you a trick for short cut to find number of Diagonals in a Polygon. After this video you can find number of diagonals of any polygon within only 2 seconds.

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[rifa]

Thank you sir . Today my teacher has given this questions to me 😊😛

[aunbailur]

Thanks Sir after 3 days my exam's r there and this is wht helped me in maths thanks

[hastinisuna]

Brilliant explanation Sir mind-blowing.

[JodieLeanneSweetin]

What about the nonagon, decagon, hendecagon and dodecagon?

[shameemakr]

Thank u so much, this idea is really great..🤗

[XD-rrpk]

Thank you sir for u I learned it clearly. The math teacher of my school couldn't make understand properly . He is only a student of college of 1st year

[AMITKUMAR-etoy]

i think kids will understand more thanks for he explnation

[adityabrains]

most helpful video in the world there is no star rating but i will give you 5 star for this video

[dipakroypramanik]

Sir please explain the basic rule, I mean : nc2 - n