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Mathematics 7 Online
OpenStudy (anonymous):

What type of polygon is shown? Convex hendecagon Concave hendecagon Convex nonagon Concave nonagon

OpenStudy (anonymous):

Directrix (directrix):

I know the hendecagon as the undecagon so I have learned something. If there are any internal angles greater than 180° then it is concave. (Think: concave has a "cave" in it). Hendecagon (or Undecagon), 11 sides. @NickBarri

OpenStudy (anonymous):

So its B @Directrix ?

Directrix (directrix):

That is what I got. @NickBarri

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