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Roational Symmetrey © 2007 All rights reserved 5 7 2 1
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Rotational Symmetry All 2 dimensional shapes have some rotational symmetry. The degree of rotational symmetry that an object has is known as its order. For shapes that have “order 2” rotational symmetry or higher, a single centre of rotation can be located. For shapes that have only “order 1” rotational symmetry a centre of rotation can be found anywhere within it. PowerPoint XP or above is needed to view the rotations on this presentation. Order 1 Order 2 Order 3 Order 4 The order of rotational symmetry that an object has is the number of times that it fits on to itself during a full rotation of 360 degrees.
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Rotational Symmetry The order of rotational symmetry that an object has is the number of times that it fits on to itself during a full rotation of 360 degrees. Order 1
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Rotational Symmetry The order of rotational symmetry that an object has is the number of times that it fits on to itself during a full rotation of 360 degrees. 2 1 Order 1 Order 2
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Rotational Symmetry The order of rotational symmetry that an object has is the number of times that it fits on to itself during a full rotation of 360 degrees. 2 1 Order 1 Order 2 3 2 1 Order 3
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Rotational Symmetry The order of rotational symmetry that an object has is the number of times that it fits on to itself during a full rotation of 360 degrees. 2 1 Order 1 Order 2 3 3 4 2 1 2 1 Order 4 Order 3
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Rotational Symmetry What is the order of rotational symmetry of the shape below?
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Rotational Symmetry What is the order of rotational symmetry of the shape below? 5 4 1 3 2 Order 5
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Regular Polygons Equilateral Triangle
An equilateral triangle has rotational symmetry of order ? Regular Polygons
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Equilateral Triangle An equilateral triangle has rotational symmetry of order ?
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Equilateral Triangle An equilateral triangle has rotational symmetry of order ? 3 3 2 1
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Pentagon Regular Pentagon
A regular pentagon has rotational symmetry of order ? Pentagon
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Regular Pentagon A regular pentagon has rotational symmetry of order ?
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Regular Pentagon A regular pentagon has rotational symmetry of order ? 5 5 4 1 3 2
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Octagon Regular Octagon
A regular octagon has rotational symmetry of order ? Octagon
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Regular Octagon 8 A regular octagon has rotational symmetry of order ?
7 8 6 1 5 2 4 3
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Rectangle A rectangle has rotational symmetry of order ? Rectangle
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Rectangle A rectangle has rotational symmetry of order ? 2 2 1
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Parallelogram Parallelogram
A parallelogram has rotational symmetry of order ? Parallelogram
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Parallelogram 2 A parallelogram has rotational symmetry of order ? 2 1
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Isos Tri Isosceles Triangle
An isosceles triangle has rotational symmetry of order ? Isos Tri
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Isos Tri Isosceles Triangle 1
An isosceles triangle has rotational symmetry of order ? 1 Isos Tri
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Kite A kite has rotational symmetry of order ? Kite
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Kite 1 A kite has rotational symmetry of order ? 1
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Rhombus A rhombus has rotational symmetry of order ? Rhombus
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Rhombus 2 A rhombus has rotational symmetry of order ? 2 1
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Questions 1 Rotational Symmetry
State the order of rotational symmetry for each shape below: 1 2 3 4 Order 6 Order 2 Order 3 Order 2 5 6 7 8 Order 1 Order 3 Order 2 Order 5 9 10 11 12 Questions 1 Order 4 Order 1 Order 6 Order 8
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Worksheet 1 Rotational Symmetry
State the order of rotational symmetry for each shape below: 1 2 3 4 5 6 7 8 9 10 11 12 Worksheet 1
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