September 13th, 2011, 11:36 AM  #1 
Senior Member Joined: Mar 2011 Posts: 105 Thanks: 0  Rhombus Name
My brother has an assignment like it gave a shape like a rhombus <>, and it asked to tell two names and then he did trapezoid and rhombus... what's wrong with this? His teacher said it's quadrilateral and rhombus.... But I think the answer can be either his or her answer, right? Because trapezoid is a quadrilateral with only one pair of parallel sides... and the rhombus already has one pair of parallel sides also. 
September 13th, 2011, 11:38 AM  #2 
Global Moderator Joined: Nov 2009 From: Northwest Arkansas Posts: 2,766 Thanks: 4  Re: Rhombus Name
A trapezoid has exactly one pair of parallel sides. A rhombus has two. 
September 13th, 2011, 01:09 PM  #3  
Senior Member Joined: Mar 2011 Posts: 105 Thanks: 0  Re: Rhombus Name Quote:
Thank you so much, Mr. The Chaz. Because I searched on Wikipedia.com... they tell it's kind of illdefined... some books tell at least one pair of parallel sides, some books tell exactly one pair of parallel sides. It depends on the book that the student learns... but I know it's nonsense. Thank you.  
September 14th, 2011, 12:05 AM  #4 
Global Moderator Joined: Dec 2006 Posts: 19,725 Thanks: 1807 
It would also be a parallelogram and a kite.


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