Question

Find the number of diagonals of a polygen of 20 sides.​

Answer 1

Answer:

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Step-by-step explanation:

jjshsdgjshs a a a atbv a few days ago and son in bathroom and u u gaa a girl that helps and u from you soon and I have an big day raha up casual and son in o name is in my right hand of the whole time ☺️☺️ in the land a job ☺️☺️☺️

Answer 2

$\fcolorbox{cyan}{blue}{Solution:-}$

$\fcolorbox{cyan}{green}{Formula:-}$

$-->\frac{n(n - 3)}{2} - -(where \: n \: is \: the \\ number \: of \: sides \: of \: the \: polygon.)$

$\fcolorbox{cyan}{purple}{By the problem:-}$

$\frac{20(20 - 3)}{2} \\ = > \frac{17 \times 20}{2} \\ = > 170$

$\fcolorbox{cyan}{otange}{Answer:-}$

170 is the number of diagonals.