No.
No. There can be no regular concave polygon.
Concave, because you can connect the corners from the outside.
concave
A concave line is a line that caves in.
No.
velaria
No. There can be no regular concave polygon.
No a parallelogram cant be concave because the only parrallelograms there are arent concaveParallelograms...*rectangle *square* rhombus*rhomboidMeaning of concave-polygons that have parts that go into the shape.
A bigger square, a rectangle, an irregular concave hexagon, an irregular concave octagon are all possibilities.
it doesnt have a name if it has the name is square
A square is one example but there are many other (concave) shapes.
A square. Or an irregular, concave shape with with 5 or more sides.
A regular polygon has all its angles of equal measure, and its sides of equal length. In the case of a quadrilateral, that would mean a square. A concave quadrilateral must have at least one reflex angle and so cannot be a square. So it cannot be regular.
The opposite of convex is concave. Concave shapes have an inward curve, while convex shapes have an outward curve.
Concave is a property of [irregular] polygons. A parallelogram cannot be concave.
plano concave