Lesson: Polygons and Nonpolygons Mathematics • Third Year of Primary School

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In this lesson, we will learn how to identify a polygon among two-dimensional figures.

Students will be able to

define polygons as closed shapes made of straight-line segments,
recognize whether a given shape is a polygon,
sort shapes into polygons and nonpolygons,
identify attributes of polygons and nonpolygons,
investigate whether the number of sides and the number of vertices in any given polygon are equal.

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