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All about Shapes

All about Shapes. 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!. What shape is this?.

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All about Shapes

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  1. All about Shapes

  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 does a square have? 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 does a rectangle have? 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 does a parallelogram have? 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 does a rhombus have? 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 Trapezoid

  23. How many lines of symmetry does a trapezoid have? None!

  24. 1 Because these angles are equal. How many lines of symmetry does this trapezoid have ?

  25. Properties of a Trapezoid • 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 diamond

  28. How many lines of symmetry does a diamond have? 1

  29. Properties of a diamond • 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 does an equilateral triangle have? 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 does an Isosceles Triangle have? 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 does a scalene triangle have? 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 triangle

  46. Properties of a right 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

  47. Triangles Shapes with 3 sides!

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

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

  50. Parallel Lines are parallel when they are always the same distance apart.

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