quadrilateral RSTV a rectangle?

[grandh01]

Is quadrilateral RSTV a rectangle?
(1) The measure of ∠RST is 90o
(2) The measure of ∠TVR is 90o

[Anurag@Gurome]

Is quadrilateral RSTV a rectangle?
(1) The measure of ∠RST is 90o
(2) The measure of ∠TVR is 90o

(1) The measure of ∠RST is 90º.



The figure clearly shows that RSTV may or may not be a rectangle; NOT sufficient.

(2) The measure of ∠TVR is 90º.



Again the figure shows that RSTV may or may not be a rectangle; NOT sufficient.

Combining (1) and (2), see the figure below:



Again, RSTV may or may not be a rectangle; NOT sufficient.

The correct answer is E.