A concave quadrilateral - like an arrowhead or chevron.
A concave quadrilateral would be a non-convex quadrilateral. * * * * * Also known as delta or arrowhead or chevron.
concave
No.
No.
A chevron or arrowhead.
yes it will...
A concave quadrilateral. An arrowhead or a delta, for example.
Yes, it looks like an arrowhead and is called a concave quadrilateral.
No. A trapezoid has two parallel sides. This is not possible in a concave quadrilateral.
It would be a concave quadrilateral The link below has some pics.
A normal 2-D quadrilateral would be neither convex or concave. There are three-dimensional quadrilaterals, such as prisms, but it would depend on the shape.