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Topic: Geometry, Common Core variety
Replies: 3   Last Post: Jun 3, 2014 5:07 PM

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Bob Bieringer

Posts: 13
Registered: 5/30/14
Re: Geometry, Common Core variety
Posted: Jun 3, 2014 4:28 PM
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att1.html (2.1 K)

I believe the book is called: *Transformation Geometry...An Introduction
to Symmetry *by George E. Martin 1982 ISBN: 978-0-387-90636-2

On Tue, Jun 3, 2014 at 3:24 PM, Roberta Eisenberg <>

> There is an old book, from the 80s I think, called *Transformation
> Geometry*. The cover is blue and red. I don?t remember the author(s)
> nor the publisher. There are lots of proofs in there. I still remember
> the proof of the thm about the base angles of an isos. triangle.
> At that time there were three high schools in NYS testing this course and
> there was a special Regents for those schools.
> If you need me to look for it, I?ll look into my library of old books
> upstairs to get the rest of the info.
> Bobbi
> On Jun 3, 2014, at 3:03 PM, Howard Levine <> wrote:
> After seeing the Common core Sample Questions for geometry I would like to
> know if there is a source of exercises for proofs involving rigid motion or
> transformations. Frankly, I don't see the need for yet another layer of
> formal proof on top of the traditional proofs.
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