Question

In quadrilateral ABCD, ZD is a right angle. Is ABCD a rectangle?
a
O No
O Yes

Answer 1

Answer: Yes
Because ABCD is a parallelogram, its opposite sides are equal. (matching angles of congruent triangles). DCB = 90o. Hence ABCD is rectangle, because it is parallelogram with one right angle.

Answer 2

Yes, its a rectangle because it has one right angle. A rectangle is a shape having all sides 90° and pair of two opposite same sides.