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Fun with Polygons: Classifications, Shapes, and more!

Explore the world of polygons - closed plane figures with multiple sides. Learn about classifications based on the number of sides, types such as convex and concave, and the concept of regular polygons. Unravel the mystery of polygons today!

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Fun with Polygons: Classifications, Shapes, and more!

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  1. Polygons Brought to you by Cavis for President

  2. What is a Polygon???? Any ideas? Write down what you think it is for #1.

  3. A polygon is a closed plane figure with 3 or more sides (all straight lines, no curves).

  4. Classifying Polygons by # of Sides 3 sided Polygon = Triangle Hint: Think “Tri”cycle, “tri”pod, “Tri”lateration (Tri means 3)

  5. Classifying Polygons by # of Sides 4 sided Polygon = Quadrilateral Hint: Think “Quad”rant, “Quad”ruple, “Quad” (AKA 4-Wheeler)

  6. Classifying Polygons by # of Sides 5 sided Polygon = Pentagon Hint: Think “Pent”athalon, or the government building “The Pentagon”

  7. Classifying Polygons by # of Sides 6 sided Polygon = Hexagon Hint: Both “Hexagon” and “Six” have an ‘x’ in them

  8. Classifying Polygons by # of Sides 7 sided Polygon = Heptagon Hint: ???

  9. Classifying Polygons by # of Sides 8 sided Polygon = Octagon Hint: “oct”opus – 8 legs

  10. Classifying Polygons by # of Sides 9 sided Polygon = Nonagon Hint: “Non” is similar to “Nine”

  11. Classifying Polygons by # of Sides 10 sided Polygon = Decagon Hint: Think “Dec”ade (10 years

  12. Classifying Polygons by # of Sides 11 sided Polygon = Hendecagon Hint: ???

  13. Classifying Polygons by # of Sides 12 sided Polygon = Dodecagon Hint: ???

  14. Classifying Polygons by # of Sides Q: What do we call a polygon with more than 12 sides? A: An ‘n’-gon where ‘n’ is the number of sides Ex: a 20 sided polygon is a 20-gon

  15. Classifying Polygons by # of Sides

  16. Two Types of Polygons Convex – all vertices point outward Concave – at least one vertex points inward towards the center of the polygon (The side looks like it “caved” in)

  17. Regular Polygons A Regular Polygon is a polygon in which all sides are the same length. Equilateral Triangle   Square

  18. Review of Similar Triangles • 2 Triangles are similar if they have the same shape (i.e. the same angle in the same positions)

  19. Similar Polygons The same is true of polygons. 2 polygons are similar if they have the same angles in the same positions (i.e. same shape) Similar Trapezoids  ^ Similar Pentagons ^ Similar Rectangles 

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