Question

Any angle of pentagon?

Answer 1

Please see below.

Explanation:

At present your question is incomplete.
I assume that you want to ask
"What is the measure of an angle in a regular pentagon?"

For a polygon, sum of all internal angles is given by
`color (purple)((n-2)×180°)`

For a pentagon it becomes
`=>(5-2)×180°`

`=>3×180°`

`=>540°`

Now it is a regular pentagon , so all internal angkes are equal.
Therefore measure of any internal angke is `(540/5)° =108°`