Yes. All polygons with 4 or more sides can be concave. An arrowhead is an example of a concave quadrilateral. The back of an envelop (where the sides are folded and glued together) is a concave pentagon.
Chat with our AI personalities
Is a concave polygon.
A concave angle is an angle, of a polygon that caves in.
concave polygon
A concave polygon has lines that curve inwards whereas a convex polygon has lines that curve outwards and they are found on and inside spheres
It is a concave or reentrant polygon.