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A concave pentagon.
A reflex angle
An arrowhead
A reflex angle is one greater than 180o
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It can, but does not have to.
No. For a start, a circle has no angles. No regular polygon has a reflex angle.
a chevron by . ekam
A concave pentagon.
A reflex angle
An arrowhead
parallelogram!
A reflex angle is one greater than 180o
In plane geometry, a shape with four sides, two of which are parallel and have the same length, cannot have a reflex angle.
cheesse
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.