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Each of the four interior angles of a square is 90 degrees in size, making the exterior angles 270° each (360° - 90°).
360 degrees
The exterior angles of any polygon are as many as their sides.
A rectangle (or square).
pentagon because it has an obtuse angle and a square has right angles- Actually, a regular pentagon has larger interiorangles, however, for exterior angles, a square beats a regular pentagon, because all exterior angles of a shape equals 360 degrees. A square has 4 angles, and 360/4= 90. A regular pentagon has 5 angles, and 360/5=72. If the pentagon isn't regular, then one exterior angle can be larger than 90 degrees.