No. For a start, a circle has no angles. No regular polygon has a reflex angle.
It can, but does not have to.
An arrowhead
A reflex angle
parallelogram!
Every obtuse angle or reflex angle has.
In plane geometry, a shape with four sides, two of which are parallel and have the same length, cannot have a reflex angle.
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Answer Reflex Angle
A reflex angle is generally larger that 90 degrees. To find an angle if the diagram is in scale use a protractor is not you would use geometry to find that angle unless the shape is regular such as a square we you know that every angle inside a square equals 90 degrees. So its all depends on the situation.
A rectangle is not an angle at all. It's a flat shape that looks like a box. A rectangle can never have a reflex angle inside it. But it always has four of them on the outside.
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reflex angle