Question

The formula to find number of a diaognal of a n-sided polygon is
please write correct answer​

Answer 1

Answer:

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.

Step-by-step explanation:

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Answer 2

Answer:

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

This formula is simply formed by the combination of diagonals that each vertex sends to another vertex and then subtracting the total sides. In other words, an n-sided polygon has n-vertices which can be joined with each other in nC2 ways.