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Topic: PARCC Definition of Trapezoid
Replies: 15   Last Post: Jun 19, 2013 9:47 AM

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Posts: 34
From: 140 Shepherd St, RVC, NY 11570
Registered: 2/7/06
RE: PARCC Definition of Trapezoid
Posted: May 1, 2013 12:45 PM
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Hmmmm... what if you use the British interpretation ? here 'trapezoid' is defined as a quadrilateral with no sides parallel and a 'trapezium' is a quadrilateral with one pair of parallel sides?

Food for thought as we grapple over inclusive v. exclusive ?US? definitions of the term trapezoid?


-----Original Message-----
From: [] On Behalf Of Holly Thomas
Sent: Wednesday, May 01, 2013 12:05 PM
Subject: PARCC Definition of Trapezoid

I've been reviewing recently released PARCC documents and was confused that PARCC is defining a trapezoid as having "at least one pair of parallel sides". However, the most recent definition I can find issued by NYS is in the 2005 Standards math glossary, in which a trapezoid is defined as having exactly one pair of parallel sides. Since this will impact instruction from Grade 3 on, I'm curious is anyone else is aware of this issue, or any discussions surrounding it.

Holly Thomas

Math Coach

Indian River Central School District

Philadelphia, NY


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