• Polygons are used in creating designs for decorating, architecture, cutting gemstones and many other applications.

• What is a polygon?
• How are polygons used in real life situations?
• What is the relationship between the number of sides and the angle measures in a polygon?
• What is the relationship between the number of sides and the number of diagonals in a polygon?

• To be able to name a polygon
• To be able to find the sum of the measures of the interior and exterior angles of a polygon.
• To be able to find the measure of each
  interior and exterior angle of a regular
  polygon.
• To be able to find the number of diagonals in a polygon.

• Tests
• Quizzes
• Practice problems
• Project

Activities:

• Complete problems involving angles and diagonals in a polygon.
• Complete a project involving tessellations and/or string art.
  

State Goals:

• 9.A.4b Make perspective drawings, tessellations and scale drawings, with and without
  the use of technology.
• 9.B.4 Recognize and apply relationships within and among geometric figures.