Question

What are the number of diagonals of a polygon with n sides.​

Answer 1

Answer:

a polygon having 4

Step-by-step explanation:

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Answer 2

Answer:

Number of Diagonals = n(n-3)/2

Explanation :

Number of Diagonals = n(n-3)/2

In other words, an n-sided polygon has n-vertices which can be joined with each other in nC2 ways. Now by subtracting n with nC2 ways, the formula obtained is n(n-3)/2. For example, in a hexagon, the total sides are 6. So, the total diagonals will be 6(6-3)/2 = 9.

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