Rotational Symmetry Concepts and Applications

This video tutorial from Minity Maths explains the concept of rotational symmetry, including how to determine the order of rotational symmetry for a shape. It provides a clear definition, discusses its occurrence in nature, and uses a square as an example to illustrate the concept. The video also includes practice questions to test understanding and encourages viewers to subscribe for more math revision videos.

What is rotational symmetry?

• Symmetry of a shape when it is scaled

• Symmetry of a shape when it is translated

• Symmetry of a shape when it is rotated about its center

• Symmetry of a shape when it is reflected

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CCSS.HSG.CO.A.4

How many times does a shape with rotational symmetry of order 3 look the same in a full rotation?

• 4 times

• 2 times

• 3 times

• 1 time

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CCSS.HSG.CO.A.4

What is the order of rotational symmetry for a square?

• 2

• 5

• 3

• 4

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CCSS.HSG.CO.A.4

What tool can help you test the rotational symmetry of a shape?

• Tracing paper

• Protractor

• Compass

• Ruler

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CCSS.HSG.CO.A.4

If a shape looks the same only once when rotated 360 degrees, what is its order of rotational symmetry?

• Order 1

• Order 3

• Order 0

• Order 2

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CCSS.HSG.CO.A.4

What is the rotational symmetry order of a shape that looks the same in four different positions?

• Order 2

• Order 3

• Order 4

• Order 5

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CCSS.RI.5.7

CCSS.RI.6.7

CCSS.RI.7.7

CCSS.RL.4.7

CCSS.RL.7.7

What should you do to test your knowledge after watching the video?

• Ask a friend

• Watch the video again

• Read a book

• Try the practice questions

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CCSS.RI.4.7

CCSS.RI.7.7

CCSS.RL.4.7

CCSS.RL.5.7

CCSS.RL.7.7