Sum of five internal angles of pentagon is _______.

Explanation:

Pentagon:

• A pentagon is a geometrical shape, which has five sides and five angles.
• Here, “Penta” denotes five, and “gon” denotes angle.
• The Pentagon is one of the types of polygons.
• The sum of all the interior angles for a regular pentagon is 540 degrees.
• If a pentagon is regular, then all the sides are equal in length, and five angles are of equal measure.
• If the pentagon does not have equal side length and angle measure, then it is known as an irregular pentagon.
• If all the vertices of a pentagon are pointing outwards, it is known as a convex pentagon.
• If a pentagon has at least one vertex pointing inside, then the pentagon is known as a concave pentagon.