Grade D Order of Rotational Symmetry Key Vocabulary
Grade D Order of Rotational Symmetry
Key Vocabulary Order Symmetry Rotation Complete Turn
Order of Rotational Symmetry The order of rotational symmetry of a shape is determined by how many times the shape fits onto itself during a 360° turn. 3 2 1 ORDER 3
Order of Rotational Symmetry The order of rotational symmetry of a shape is determined by how many times the shape fits onto itself during a 360° turn. 2 1 ORDER 2
Order of Rotational Symmetry The order of rotational symmetry of a shape is determined by how many times the shape fits onto itself during a 360° turn. 4 3 2 1 ORDER 4
Order of Rotational Symmetry The order of rotational symmetry of a shape is determined by how many times the shape fits onto itself during a 360° turn. 5 6 4 1 2 3 ORDER 6
Order of Rotational Symmetry Every shape has an order of rotational symmetry, even if it is order 1. 1 ORDER 1
Order of Rotational Symmetry Every shape has an order of rotational symmetry, even if it is order 1. 1 ORDER 1
Problem Solving and Reasoning Draw two more shapes so that the completed pattern has rotational symmetry of order 4 about O. O
Problem Solving and Reasoning A bowl manufacturer wants to design a pattern to be printed on a new bowl. They are considering three designs as shown below. The new design must satisfy the following conditions: Given that: n = the number of lines of symmetry r = the order of rotational symmetry Then n > 2 and r - n = 0 Design 1 Design 2 Design 3 n r 3 4 3 Design 2 Satisfies the criteria? Yes or No 3 4 3 Yes Yes Design 3
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