nervesofsteel wrote:
The angles can be : 90,90,45,135
or
90,90,60,120

nervesofsteel wrote:Is the measure of one of the interior angles of quadrilateral ABCD equal to 60 degrees?
(1) Two of the interior angles of ABCD are right angles.
(2) The degree measure of angle ABC is twice the degree measure of angle BCD.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is
sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

IMO E
but OA C

The angles can be : 90,90,45,135
or

clar wrote:
90, 90, 45 , 135 is not a possible case becoz it is already mentioned in the question stem that one of the interior angles is 60.

hope that helps.