Geometry concept

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Geometry concept

Which quadrilaterals have opposite angles equal and for which quadrilaterals do diagonals bisect the vertex angles?
tim
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Re: Geometry concept

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..
Tim Sanders
Manhattan GMAT Instructor

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gmatwork
Course Students

Posts: 185
Joined: Wed Dec 31, 1969 8:00 pm

Re: Geometry concept

do diagonals of a parallelogram bisect their respective vertex angles?
tim
ManhattanGMAT Staff

Posts: 5665
Joined: Tue Sep 11, 2007 9:08 am
Location: Southwest Airlines, seat 21C

Re: Geometry concept

only if that parallelogram is also a rhombus..
Tim Sanders
Manhattan GMAT Instructor