Answer:
No, because the statement explains a parallelogram also.
Step-by-step explanation:
A rectangle is a quadrilateral that has four sides which has a set of equal opposite sides that are parallel to each other. The sum of all angles in a rectangle = [tex]360^{0}[/tex]
No, he can not conclude that ABCD is a rectangle with the statement because the statement is applicable to a parallelogram also. He could add that opposite sides are straight and parallel. So that:
<ABC = CDA = [tex]90^{0}[/tex] (right angle property)
<DAB = <BCD = [tex]90^{0}[/tex] (right angle property)