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Is this shape a concave polygon?
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Explanation

The correct answer is Yes.

 


Remember: A concave polygon has at least 1 internal angle greater than 180°. A concave polygon also has an indent like a cave.

 

The given shape has 2 internal angle that are greater than 180° and the shape is indented (as shown with the red color).

                                                                    

Hence, this polygon is a concave polygon

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