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Polygon slide

  1. 1. MATHEMATICS FORM 1 POLYGONSITI NORHASMIRA BINTI NORDIN D20111048185
  2. 2. POLYGON
  3. 3. WHAT IS POLYGON???
  4. 4. Bounded by three or more sides Line that Straight Polygon joins twoline sides non- meet at adjacent point vertices of called a Made of polygon is vertex straight lines, called a and the shape diagonal is “closed”
  5. 5. Which of following are polygon? Why?POLYGON because have straight sides and enclosedNOT A POLYGON because not enclosed figureNOT A POLYGON because has a curve
  6. 6. How many sides ??? 12 5 4 0
  7. 7. Type of polygon
  8. 8. I have 3 straight sides.I have 3 vertices.What shape am I? I’m a triangle!
  9. 9. TRIANGLE Equilateral Isosceles Triangle Scalene Triangle TriangleThree equal sides Two equal sides No equal sides Three equal Two equal angles No equal anglesangles, always 60°
  10. 10. I have 4 straight sides.I have 4 vertices. What shape am I? I’m a quadrilateral!
  11. 11. QUADRILATERAL Quadrilateral just means "four sides" (quad means four, lateral means side). Any four-sided shape is a Quadrilateral. But the sides have to be straight, and it has to be 2-dimensional.
  12. 12. QUADRILATERAL
  13. 13. I have 5 straight sides.I have 5 vertices.What shape am I? I am a pentagon!
  14. 14. PENTAGONRegular Pentagon Irregular Pentagon Irregular Pentagon Irregular Pentagon
  15. 15. I have 6 straight sides.I have 6 vertices. What shape am I? I am a hexagon!
  16. 16. HEXAGONRegular Hexagon Irregular Hexagon Irregular Hexagon
  17. 17. I have 7 straight sides.I have 7 vertices. What shape am I? I am an heptagon!
  18. 18. HEPTAGONIrregular Heptagon Regular Heptagon Irregular Heptagon
  19. 19. I have 8 straight sides.I have 8 vertices. What shape am I? I am an octagon!
  20. 20. OCTAGONIrregular Octagon Regular Octagon Irregular Octagon
  21. 21. Symmetry• An object is said to have line(s) of symmetry if one side of it overlaps exactly with the other. Line of symmetry (vertical) Line of symmetry (diagonal) Line of symmetry (horizontal)
  22. 22. 1. Which of the following is a correct definition of a polygon? A . A closed plane figure with 3 or more straight edges as its sides. B. A figure with 3 or more straight edges. C. A closed figure with either straight or curved edges as its sides. D. A plain figure with 3 or more straight edges as its sides.
  23. 23. 2. Name the polygon A. Triangle B. Quadriangle C. Hexagon D. Quadrilateral
  24. 24. 3. Identify the polygon(s) A B D C
  25. 25. 4. Which of the following are NOT polygons A B C D

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