what is the angle of rotation of this regular octagon? what is the measure of an interior angle?
A regular octagon is a closed figure with sides of the same length and internal angles of the same size. It has eight lines of reflective symmetry and rotational symmetry of order 8. A regular octagon is represented by the Schlaefli schlÃ¤fli {symbol}. 8 the internal angle at each vertex of a regular octagon is Â° . 135
So the general rule is: Sum of Interior Angles = (n -2) Ã 180 Â°. Each Angle (of a Regular Polygon) = (n -2) Ã 180 Â° / n. Perhaps an example will help: