Answer: rectangle.
Explanation:
Given points: K(0,0) I(2,2) T(5,-5) E(7,-3)
Distance formula to find distance between
and
:





i.e. KI = TE and KT= IE, so opposite sides equal.
It can be a parallelogram or rectangle. [if all sides are equal it would be square or rhombus]


IT= KE, i.e. diagonals are equal.
It means KIET is a rectangle.