this is a quadrilateral. for further examples, see below square rectangle trapezoid rhombus parrallelogram
The answer is given below.
It would be a concave quadrilateral The link below has some pics.
The answer is below!
Which of the following is a valid reason why the quadrilateral shown below is a parallelogram?
Area of a rhombus: base times perpendicular height Or area of a rhombus: 0.5 times product of its diagonals
a and d
If the diagonals of the rhombus are 13 and 15 then its area is 0.5*13*15 = 97.5 square units