Mengenal bentuk 2D

1. shapes

2. shapes 2D

4. What is a 2D shape ? L W L W L W L – The length of the shape W – The width of the shape The faces are FLAT .

5. Face Corner Straight line Parts of a 2D shapes Angle

6. Face Corner ? Curve side Parts of a 2D shapes x Angle x

7. circle Names of 2D shapes circle square square triangle triangle oval oval rectangle rectangle pentagon pentagon hexagon hexagon heptagon heptagon octagon octagon

8. Names of 2D shapes circle square triangle oval rectangle pentagon hexagon heptagon octagon Name : Circle Face : Round Sides : Curve side Corner : 0 Angle : 0

9. Names of 2D shapes circle square triangle oval rectangle pentagon hexagon heptagon octagon Name : Square Face : Square Sides : Straight sides Corner : 4 Angle : 4

10. Names of 2D shapes circle square triangle oval rectangle pentagon hexagon heptagon octagon Name : Triangle Face : Triangular Sides : Straight sides Corner : 3 Angle : 3

11. Names of 2D shapes circle square triangle oval rectangle pentagon hexagon heptagon octagon Name : Oval Face : Oval Sides : Curve side Corner : 0 Angle : 0

12. Names of 2D shapes circle square triangle oval rectangle pentagon hexagon heptagon octagon Name : Rectangle Face : Rectangular Sides : Straight sides Corner : 4 Angle : 4

13. Names of 2D shapes circle square triangle oval rectangle pentagon hexagon heptagon octagon Name : Pentagon Face : Pentagon Sides : Straight sides Corner : 5 Angle : 5

14. Names of 2D shapes circle square triangle oval rectangle pentagon hexagon heptagon octagon Name : Hexagon Face : Hexagon Sides : Straight sides Corner : 6 Angle : 6

15. Names of 2D shapes circle square triangle oval rectangle pentagon hexagon heptagon octagon Name : Heptagon Face : Heptagon Sides : Straight sides Corner : 7 Angle : 7

16. Names of 2D shapes circle square triangle oval rectangle pentagon hexagon heptagon octagon circle square triangle oval rectangle pentagon hexagon heptagon octagon circle square triangle oval rectangle pentagon hexagon heptagon octagon circle square triangle oval rectangle pentagon hexagon heptagon octagon Name : Octagon Face : Octagon Sides : Straight sides Corner : 8 Angle : 8

17. Face Corner Straight line Parts of a 2D shapes Angle

18. Face Corner Straight line Parts of a 2D shapes Angle

19. Face Corner ? Curve side Parts of a 2D shapes x

20. Parts of a 2D shapes Face Corner Straight line Angle

21. Parts of a 2D shapes Face Corner Curve side x

22. Guess what shape is this It has 3 straight sides and 3 corners… Answer : Triangle

23. Guess what shape is this It has 4 equal sides and 4 corners… Answer : Square

24. Guess what shape is this It has a round face. It has no corners… Answer : Circle

25. Guess what shape is this It has 4 corners and 4 sides. 2 of the sides are longer… Answer : Rectangle

26. Fill in the blanks Name : Face : Sides : Corners : Square square 4 equal sides 4

27. Fill in the blanks Name : Face : Sides : Corners : Rectangle Rectangular 4 straight sides 2 sides longer 4

28. Fill in the blanks Name : Face : Sides : Corners : Triangle Triangular 3 straight sides 3

29. Fill in the blanks Name : Face : Sides : Corners : Circle Round A curve side No corners

30. Fill in the blanks Name : Face : Sides : Corners : Oval Oval A curve side No corners

31. Polygons Characteristic of prisms

33. What are polygons? Polygons are 2D shapes with only straight sides . Examples : Straight lines

34. What are polygons? Shapes with curve sides are not polygons. Examples : Curve sides

35. State whether these shapes are polygons Exercise √ √ x √ √ √ x x x √

36. Are these polygons or non-polygons ? Answer

37. Are these polygons or non-polygons ? √ x √ √ x x

38. shapes 3D

40. Names of 3D shapes cube sphere cylinder cone pyramid

42. Square prism Types of 3D shapes

43. Parts of 3D shapes Face Base Vertex Edge

44. Rectangular prism Types of 3D shapes

45. Triangular prism Types of 3D shapes

46. lines Symmetry & Symmetrical shapes

47. Are these shapes symmetry? How to indicate symmetrical shapes

48. When the shape is cut out in two, are the cutouts the same? How to indicate symmetrical shapes same

49. When the shape is cut out in two, are the cutouts the same? How to indicate symmetrical shapes same

50. When the shape is cut out in two, are the cutouts the same? How to indicate symmetrical shapes same

51. Circle is a symmetrical shape. How to indicate symmetrical shapes The symmetry lines are many.

52. Is a square a symmetrical shape? How to indicate symmetrical shapes

53. How to indicate symmetrical shapes

54. So, is a square a symmetrical shape? How to indicate symmetrical shapes yes

55. How to indicate symmetrical shapes

56. So, is a triangle a symmetrical shape? How to indicate symmetrical shapes yes

57. State whether these shapes are symmetrical or not Exercise √ √ √ √ √ √ √ x x x