# Diagonals of a Circumscribable Quadrilateral

• Jul 26th 2011, 11:39 PM
aldrincabrera
,.Are the Diagonals of a Circumscribable Quadrilateral always congruent??if not,.does there exist a circumscribable quadrilateral whose diagonals aren't congruent??
• Jul 27th 2011, 12:48 AM
earboth
Re: Diagonals of a Circumscribable Quadrilateral
Quote:

Originally Posted by aldrincabrera
,.Are the Diagonals of a Circumscribable Quadrilateral always congruent??if not,.does there exist a circumscribable quadrilateral whose diagonals aren't congruent??

Have you ever seen this post? http://www.mathhelpforum.com/math-he...tml#post665240
• Jul 27th 2011, 06:27 AM
Soroban
Re: Diagonals of a Circumscribable Quadrilateral
Hello, aldrincabrera!

I assume you didn't try sketching . . .

Quote:

Are the diagonals of a circumscribable quadrilateral always congruent?

Of course not!

Code:

                A         D    * o *    B           o          o         *              *       *                *       *                  *       *                  *       *                  *       *                *         *              *           *          *               * o *                 C

$\displaystyle \text{Quadrilateral }ABCD\text{ is circumscribable,}$
. . $\displaystyle \text{but }AC \ne BD.$

• Jul 27th 2011, 05:38 PM
aldrincabrera
Re: Diagonals of a Circumscribable Quadrilateral
,.thanks a lot sirs,.,amm,.,.can u help me agen with my problem in the thread "The Missing Point"???i understand why c=p+q but i cant understand d=p-q,.,.im confused with p,.,thnx sirs