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Geometry concept

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gmatwork
 Post subject: Geometry concept
 Post Posted: Wed Feb 22, 2012 12:43 pm 
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Course Students


Posts: 187
Which quadrilaterals have opposite angles equal and for which quadrilaterals do diagonals bisect the vertex angles?
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tim
 Post subject: Re: Geometry concept
 Post Posted: Sun Feb 26, 2012 5:29 am 
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ManhattanGMAT Staff


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Location: Southwest Airlines, seat 21C
if both pairs of opposite angles are congruent, it is a parallelogram; if only one pair is congruent, there is no specific name for such a quadrilateral..

if both diagonals bisect their respective vertex angles, you have a rhombus. if only one diagonal does this, it is called a kite..

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Tim Sanders
Manhattan GMAT Instructor
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gmatwork
 Post subject: Re: Geometry concept
 Post Posted: Tue Apr 10, 2012 8:44 pm 
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Course Students


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do diagonals of a parallelogram bisect their respective vertex angles?
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tim
 Post subject: Re: Geometry concept
 Post Posted: Tue Apr 17, 2012 7:25 pm 
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ManhattanGMAT Staff


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Location: Southwest Airlines, seat 21C
only if that parallelogram is also a rhombus..

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Tim Sanders
Manhattan GMAT Instructor
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