1. Polygon Presentation By: Elaine Hersh, Anna Oleszczuk, and Sarah Meder

2. tables found on wikepedia under polygons Resource Page Polygon names NameSides triangletriangle (or trigon)3 quadrilateralquadrilateral (or tetragon)4 pentagon5 hexagon6 heptagonheptagon (avoid "septagon")7 octagon8 enneagonenneagon (or "nonagon")9 decagon10

3. Resource Page hendecagonhendecagon (avoid "undecagon")11 dodecagondodecagon (avoid "duodecagon")12 triskaidecagon13 pentadecagon15 heptadecagon17 enneadecagon19 icosagon20 triacontagon30 pentacontagon50 hectagonhectagon (avoid "centagon")100 chiliagon1000 myriagon10,000

4. Resource Page Tens andOnesfinal prefix -kai- 1hena- -gon 20icosi-2-di- 30triaconta-3-tri- 40tetraconta-4-tetra- 50pentaconta-5-penta- 60hexaconta-6-hexa- 70heptaconta-7-hepta- 80octaconta-8-octa- 90enneaconta-9-ennea- That is, a 42-sided figure would be named as follows: Tens andOnes final pre fix full polygon name tetraconta--kai--di--gontetracontakaidigon and a 50-sided figure Tens andOnes final prefi x full polygon name pentaconta- -gonpentacontagon

5. Types of Polygons  Regular Polygons  Triangles  Quadrilaterals  Pentagons  Hexagons  Octagons  Decagons

6. Regular Polygons All of the sides and the angles are congruent

7. Triangles Three sided polygons

8. Quadrilaterals Four sided polygons

9. Pentagons Five sided polygons

10. Hexagons Six sided polygons

11. Octagons Eight sided polygons

12. Decagons Ten sided polygons

13. Name the following polygons. 1 2 3

14. 1 – HEXAGON 2 – QUADRILATERAL RECTANGLE 3 - DECAGON

15. Name the following polygons. 1 2 3

16. 1 – Octagon 2 – Pentagon 3 – Scalene Triangle

17. What polygons can you find… In your classroom? On the playground? In your own home?