Question

find angle a,b,c,d and e

Answer 1

And if we join these vertices, we get a regular pentagon. And at each vertex of this regular pentagon, there will be 3 angles formed by the diagonals.

Each angle of regular pentagon ={ (n-2)*180} /5

= (3 *180)/5 = 108°

So, each angle at vertices of the star = 108/3 = 36°

So, the sum of such 5 angles = 180°

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