Question

Find the number of diagonals in a regular pentagon.

Answer 1

Answer:

A pentagon (5 sides) has only 5 diagonals. Each vertex has two diagonals, so if you counted each diagonal from every vertex twice, you might think there were 10 diagonals.

Step-by-step explanation:

Hope it's helpful for you .

Answer 2

Number of diagonals in a regular pentagon = 5

Given:

A regular pentagon

To find:

The number of diagonals

Solution:

Given a regular pentagon

Number of sides of pentagon = 5

Note:

The formula for number of diagonals in a regular pentagon with number of sides n is given by

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

As we know number side in pentagon = 5

Number of diagonals = 5(5-3)/2 = 5(2)/2 = 5

Number of diagonals in a regular pentagon = 5

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