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All about Shapes

All about Shapes. Ask Boffin!. Properties of Shapes. Number of sides Number of angles Number of lines of symmetry Regular or irregular Right Angles Parallel lines. Shapes. Triangles. Quadrilaterals. Polygons. Regular Shapes. Key Words. Quadrilaterals. Shapes with 4 sides!.

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All about Shapes

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  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

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