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Line Symmetry and Rotational Symmetry

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Line Symmetry and Rotational Symmetry:

You have been observing many shapes and their symmetries so far. By now you would have understood that some shapes have only line symmetry, some have only rotational symmetry and some have both line symmetry and rotational symmetry.

For example, Some shapes have only one line of symmetry, like the letter E; some have only rotational symmetry, like the letter S; and some have both symmetries like the letter H.

The circle is the most perfect symmetrical figure because it can be rotated around its centre through any angle and at the same time it has an unlimited number of lines of symmetry. Observe any circle pattern. Every line through the centre (that is every diameter) forms a line of (reflectional) symmetry and it has rotational symmetry around the centre for every angle.


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Line Symmetry and Rotational Symmetry of Circle [00:05:00]
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