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Topic: The length of diagonal of a parallelogram
Replies: 4   Last Post: Dec 7, 2006 11:34 PM

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Michael Lambrou

Posts: 70
Registered: 12/3/04
RE: The length of diagonal of a parallelogram
Posted: Jun 29, 2004 8:31 AM
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> -----Original Message-----
> From: owner-geometry-puzzles@mathforum.org [mailto://owner-geometry-
> puzzles@mathforum.org] On Behalf Of Jo Ann Gilpin
> Sent: Tuesday, June 29, 2004 9:32 AM
> To: geometry-puzzles@mathforum.org
> Subject: The length of diagonal of a parallelogram
>
> Is there a simple formula for figuring out the length of diagonal for
> a parallelogram (with no right angles)? I've been trying to figure
> this out for the past couple hours!!


Hint: cosine rule





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