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

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Jonathan Halabi

Posts: 119
Registered: 8/16/08
Re: Geometry, Common Core variety
Posted: Jun 3, 2014 5:07 PM
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att1.html (3.0 K)

?He was a prominent professor at SUNY Albany. He wrote undergrad books -
didn't know he dabbled in high school.

Jonathan Halabi?

On Tue, Jun 3, 2014 at 4:28 PM, Bob Bieringer <> wrote:

> 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 <>
> wrote:

>> 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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