Math, asked by Anonymous, 10 months ago

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Answered by ayushanand805

1

Answer:

B. $\frac{n(n-3)}{2}$

Step-by-step explanation:

$\frac{n(n-3)}{2}$ is the correct answer.

This satisfies all the answers and can be found using PnC of diagonals and triangles.

Pls mark me as Brainliest!!!

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