<VV> Muffler Heat Shields

[James Davis]

American high school geometry text (the Texas version) usually define a 
trapezoid as a quadrilateral with exactly two sides parallel.  A 
trapezium is usually defines as a totally irregular quadrilateral.   
Common usage often deviated from this practice, considering these terms 
as interchangeable.
Jim Davis
(12 years of teaching high school math)

FrankCB wrote:
> Bob and Bill,
>      I think you mean "trapezoid" which is the American equivalent of the British "trapezium" and is a 4 sided figure with 2 sides parallel.  If it has 2 sides parallel and the other 2 sides ALSO parallel then it's a "parallelogram".
>      Frank Burkhard 
>
> In a message dated 02/28/10 16:50:04 Eastern Standard Time, billpier39 at yahoo.com writes:
> I just got some heat shields out of the attic in my garage. The rectangular ones are lates, the trapezium are early. 
> Bill Pierson 
>
>
>
> ----- Original Message ---- 
> From: Vairtec Corporation <Vairtec at optonline.net 
>
> To the best of my knowledge, there exist three variations of a 
> factory muffler heat shield for the Corvair:  An early model variant, 
> a late model variant, and a left-side variant for the 140-hp engines. 
>
> Of the first two, one of them is a rectangle while the other is a 
> trapezium.  I can't remember which is the EM and which is the LM. 
>
> Actually, there are lots of things I can't remember these days, but 
> for the moment I need this piece of information to correctly identify a part. 
>
> --Bob Marlow