Question: Shapes with diagonals that are not equal in length?
Disambiguated questions and answers: question: Shapes with diagonal adjacent sides that are not equal in length?
Rectangular shapes with diagonal adjacent sides that are not equal in length?
Shape who most general form has diagonals that are not equal in length?
answer: Rhomboid
Oblong
kite
Natural Questions answer: Rhombus
Parallelogram
Trapezoid (from the Wikipedia article "Quadrilateral")