Video: Identifying Polygons

Is the following picture a polygon?

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Video Transcript

Is the following picture a polygon?

We define a polygon as a plane shape with straight sides. Is this image a plane shape with straight sides?

This image is a plane shape. It’s a flat shape. It’s a two-dimensional shape. But is it made up of straight sides? It’s not.

This part of the figure in red is a curve. It’s not a straight side. Therefore, this figure is not a polygon.

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