It looks like its the heading on an exercise and it means for the given polygons name them. The polygons will either be pictures or descriptions (like "it has four equal sides and two pairs of parallel sides").
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Identify each shape
because every point must have its own name to identify it from others.
It is a rectangle.
A polygon has 4 sides if and only if it is a quadrilateral.
An angle is formed at each vertex of a polygon.