It depends on whether you mean area, perimeter, sides, angles, diagonals, etc.
Chat with our AI personalities
A quadrilateral has 2 diagonals. It does not matter whether it is convex or not.
no
If any of the angles is greater than 180 degrees, the quadrilateral is concave.
It may or may not be.
A concave quadrilateral. An arrowhead or a delta, for example.