Polygonal Angles 3 – Vertex Angles

Geometry Level 1

An equilateral triangle has an internal angle sum of 180 180^\circ and each vertex has angles of 60 60^\circ . A square has an internal angle sum of 360 360^\circ and each vertex has an angle of 90 90^\circ . A regular pentagon has an internal angle sum of 540 540^\circ . What is the angle at each vertex of a regular pentagon?

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