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Angles in Polygons

Angles in Polygons

Description:
  1.  

    Derive the interior angles formula for a polygon with n number of sides [(n-2)·1800].

  2.  

    Present the polygon exterior angles theorem (the sum of the measures of the exterior angles of a convex polygon, one angle at each vertex, is 3600).

  3.  

    Demonstrate how to solve for the measure of an interior or exterior angle of a polygon.

  4.  

    Provide examples that allow practice solving for unknown variables and angle measures.

 

This packet should help a learner seeking to understand how to determine the measures of interior and exterior angles of polygons.

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Tutorial

Sum of Interior Angles

This video presents the formula for the sum of the interior angles of a polygon.

Source: RobertOB on Guaranteach

Sum of Exterior Angles

This video presents the fact that the sum of the exterior angles of any polygon is 360 degrees.

Source: RobertOB on Guaranteach

Finding Unknown Angles in Polygons

This video explains how to find an unknown angle using the formula for the sum of the interior angles of a polygon.

Source: RobertOB on Guaranteach