Lesson Plan: Polygons and Nonpolygons | Nagwa Lesson Plan: Polygons and Nonpolygons | Nagwa

# Lesson Plan: Polygons and Nonpolygons Mathematics

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to define and identify polygons and nonpolygons and sort two-dimensional figures into polygons and nonpolygons.

#### Objectives

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.

#### Prerequisites

Students should already be familiar with

• two-dimensional shapes,
• three-dimensional shapes,
• the difference between a line segment and a curve,
• the difference between closed and open shapes,
• triangles, quadrilaterals, pentagons, and octagons,
• the vertices and sides of a closed figure.

#### Exclusions

Students will not cover

• naming polygons,
• determining whether polygons are regular or irregular,
• concave polygons,
• congruence,
• angles.