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Mathematics 16 Online
OpenStudy (anonymous):

Is every quadrilateral a parallelogram?

OpenStudy (mertsj):

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OpenStudy (mertsj):

What do you think?

OpenStudy (dumbcow):

..but every parallelogram is a quadrilateral

OpenStudy (hexagon001):

what is the property of parallelogram? do these coincide with all quadrilaterals?

OpenStudy (anonymous):

every parallelogram is a quadrilateral but every quadrilateral may not be a parallelogram. a trapezium is a quadrilateral but not a parallelogram.

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