A polygon is regular if...: All angles are equal and all sides are equal. True or False: A circle is a polygon: False. A polygon is..: A shape with straight sides that meet at angles. True or False: This is a regular polygon: True. Anna says that this shape is a polygon. Is she correct or incorrect: Incorrect. Which of these figures are considered polygons: a, b, c. A polygon has to have: at least three sides