In order to do this, the sum of the interior angles must first be known. Use the formula, (𝒏 – 2) × 180, where 𝒏 is the number of sides of the polygon, which gives (5 – 2) × 180 = 3 × ...

Polygons can be regular or irregular. If the angles are all equal and all the sides are equal length it ... The sum of interior angles is \((5 - 2) \times 180 = 540^\circ\). The interior angle ...