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# Shapes

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Mengenal bentuk 2D

Mengenal bentuk 2D

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### Transcript

• 1. shapes
• 2. shapes 2D
• 3.
• D stands for DIMENSIONS
• The 2 dimensions are :
• i. Lengths
• ii. Width
• Shapes with these 2 dimensions are called
• 2D SHAPES .
• The face of every 2D shapes are FLAT .
What are 2D shapes ?
• 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
• 32. Types of 2D shapes ?
• There are 2 types of 2D shapes :
• polygon
• non-polygon
Polygons are 2D shapes with only straight sides . 2D shapes which have curved side are called non-polygons .
• 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
• 39.
• The 3 dimensions are :
• i. Lengths (L)
• ii. Width (W)
• iii. Depth (D)
• Shapes with these 3
• dimensions are called 3D SHAPES .
• The face of a 3D shapes can be FLAT or curve .
What are 3D shapes ? L W D
• 40. Names of 3D shapes cube sphere cylinder cone pyramid
• 41. Characteristic of prisms
• 1. Have at least 2 identical bases
• Have straight sides
• Have faces other than the bases in rectangular shapes
• 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