chetan2u wrote:

dina98 wrote:

What if it's a square? Is the assumption that every 'square' is a rectangle?

Hi,

Yes, every square is a rectangle because it fulfills all requirements of a rectangle like opposite sides equal, diagonal equal and all angles are 90...

It is just that additionally a square has not only OPP sides but all sides are equal..

And the diag are not only equal and bisect each other but also cut each other at 90..

Thus all square are rectangle but all rectangle need not be square...

Hope it helps

what is the difference?

mattce wrote:

Is quadrilateral ABCD a rectangle?

(1) Two sides of ABCD are equal in length

(2) Two opposite internal angles of ABCD are right angles

Thought this was a good question; really tested my visualization. (Please don't think harder just because I said that...)

The question has quite ambiguous wording...

Anyway, check the diagram below:

Attachment:

E.png

E.png [ 2.77 KiB | Viewed 4395 times ]

Answer: E.