A.2
B.5
C.6
D.7
Answer: (B) 5
The Pentagon is a 5-sided polygon. Generally, the polygon is defined as the n-sided polygon. The number of sides of the polygon should be equal to the number of vertices and the number of angles of the pentagon.
So hence a pentagon should have 5 vertices and 5 angles.
The internal angle between the sides of a regular pentagon is 108°. The central angle is 72°.
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