Today for maths I learnt how to define if a shape is a polygon or not. A polygon is a shape that joins up at the end, eg - a circle or a square. Polygons are made up entirely of lines. I a shape has a curve then it is not a polygon. Also if a the shape has lines that intercept then they are not a polygon.To figure out if a polygon is regular or irregular you have to figure out if all sides are equal and all angles are equal, so if all the angles are 90 degrees and all the sides are 2 meters, then that shape is a polygon.
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