Does an octagon have a right angle?

Answer 1

An octagon is any polygon with 8 sides, so you could construct one with a right angle. Since the sum of the angles in an octagon is 1080°, you could construct one with one or more right angles.

In a regular octagon, all sides and angles are equal. (Each angle = 135°, which is not a right angle).

You can go to the Math Openref website in the related link and play around with polygons of different number of sides, and see how the angles change.

If you cannot get to that site then think about this. It is a large square with two of the corners 'notched out' with smaller squares. It has 8 sides, and there are 6 angles of 90°, and 2 angles of 270° (a reverse right angle) Ignore the periods, I needed them to space out the figure:

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