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All about Shapes PowerPoint Presentation
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All about Shapes

All about Shapes

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All about Shapes

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Presentation Transcript

  1. All about Shapes Ask Boffin!

  2. Properties of Shapes • Number of sides • Number of angles • Number of lines of symmetry • Regular or irregular • Right Angles • Parallel lines

  3. Shapes Triangles Quadrilaterals Polygons Regular Shapes Key Words

  4. Quadrilaterals Shapes with 4 sides!

  5. What shape is this?

  6. A Square

  7. How many lines of symmetry has a Square got? 2 1 3 4

  8. Properties of a Square • Has 4 equal sides • Has 4 equal angles • Each angle is a right angle • Has 4 lines of symmetry • Is a regular shape

  9. What shape is this?

  10. A Rectangle

  11. How many lines of symmetry has a Rectangle got? 1 2

  12. Properties of a Rectangle • Has 2 pairs of equal sides • Has 4 equal angles • Each angle is a right angle • Has 2 lines of symmetry • Is an irregular shape

  13. What shape is this?

  14. A Parallelogram

  15. How many lines of symmetry has a Parallelogram got? None!

  16. Properties of a Parallelogram • Has 2 pairs of equal sides • Has 2 pairs of equal angles • Opposite sides are parallel • Has NO lines of symmetry • Is an irregular shape

  17. What shape is this?

  18. A Rhombus

  19. How many lines of symmetry has a Rhombus got? 1 2

  20. Properties of a Rhombus • Has 4 equal sides • Has 2 pairs of equal angles • Opposite sides are parallel • Has 2 lines of symmetry • Is an irregular shape

  21. What shape is this?

  22. A Trapezium

  23. How many lines of symmetry has a Trapezium got? None!

  24. 1 Because these angles are equal. How many lines of symmetry has thisTrapezium got?

  25. Properties of a Trapezium • Has unequal sides • One pair of opposite sides are parallel • Usually has NO lines of symmetry • Is an irregular shape

  26. What shape is this?

  27. A Kite

  28. How many lines of symmetry has a Kite got? 1

  29. Properties of a Kite • Has 2 pairs of equal sides • Has 1 pair of equal angles • Equal sides are adjacent • Has 1 line of symmetry • Is an irregular shape

  30. Quadrilaterals Shapes with 4 sides!

  31. Triangles Shapes with 3 sides!

  32. What type of triangle is this?

  33. An Equilateral Triangle

  34. How many lines of symmetry has an Equilateral Triangle got? 1 2 3

  35. Properties of an Equilateral Triangle • Has 3 equal sides • Has 3 equal angles • Each angle is a 60o angle • Has 3 lines of symmetry • Is a regular shape

  36. What type of triangle is this?

  37. An Isosceles Triangle

  38. How many lines of symmetry has an Isosceles Triangle got? 1

  39. Properties of an Isosceles Triangle • Has 2 equal sides • Has 2 equal angles • Has 1 line of symmetry • Is an irregular shape

  40. What type of triangle is this?

  41. A Scalene Triangle

  42. How many lines of symmetry has a Scalene Triangle got? None!

  43. Properties of an Scalene Triangle • Has NO equal sides • Has NO equal angles • Has NO lines of symmetry • Is an irregular shape

  44. What type of triangle is this?

  45. A Right Angled Triangle

  46. A Right Angled Triangle is different It may be scalene or it may be isosceles But it always has a right angle!

  47. Properties of a Right Angled Triangle It will be isosceles and have 1 line of symmetry when these 2 sides are equal. • Has 1 right angle • May be an isosceles triangle • May have 1 line of symmetry • Is an irregular shape

  48. Triangles Shapes with 3 sides!

  49. Key Words • Regular Shape • Parallel • Perpendicular • Vertex • Diagonal • Bisect

  50. Regular Shape Shapes are regular when • All their sides are the same length • All their angles are the same size