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Mathematics 8 Online
OpenStudy (anonymous):

The region bounded by a quadrilateral must be convex. True False

OpenStudy (kunal):

true....

OpenStudy (kunal):

sorrry... its false

OpenStudy (kunal):

actually it is rather a guss .. well i am not sure but may be it is because a quadrilateral is curved inwards and that phenomenon is called concavity...

Directrix (directrix):

A quadrilateral may be convex or concave (see the diagram).

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