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Lesson: Naming Polygons Mathematics • 2nd Grade

In this lesson, we will learn how to count the edges and vertices of polygons in order to name them as triangles, quadrilaterals, pentagons, hexagons, or octagons.

Lesson Plan

Students will be able to

  • define polygons as closed shapes made of straight line segments,
  • classify polygons as triangles, quadrilaterals, pentagons, hexagons, or octagons based on the number of sides, angles, or vertices they have,
  • understand that polygons have the same number of sides, angles, and vertices.

Lesson Video

Video Thumbnail
07:24

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