Is there a name for this type of polygon?

Is there a name for a polygon in which you could place a light bulb that would light up all of its area? (for which there exists a point so that for all points inside it the line connecting those two points does not cross one of its edges)

Examples of “lightable” polygons:

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Examples of “unlightable” polygons:

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Answer

Yes, those are called star-shaped polygons. They have numerous applications in mathematics, for example in complex analysis.

Attribution
Source : Link , Question Author : Community , Answer Author : Clément

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