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I got this problem wrong and do not understand it and need to correct it.

I got this problem wrong and do not understand it and need to correct it.-example-1
User Dees Oomens
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1 Answer

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15 votes

ANSWER:

5 lines of symmetries

72°, 144°, 216°, 288° and 360

Explanation:

In regular polygons, the number of lines of symmetry is equal to the number of sides of the polygon. If that isometry is a reflection, then a figure has reflection symmetry, so another way to think about reflection symmetry is that one half of the figure is a mirror image of the other half.

In the case of the pentagon, it has 5 lines of symmetries drawn just like that:

The number of times a figure fits into itself in one complete rotation is called the order of rotational symmetry. If X° is the smallest angle by which a figure is rotated so that it rotates from it conforms to the original shape.

It can be rotated about 5 times, since the angle x ° is equal to 72 °, therefore the rotation angles would be:

72°, 144°, 216°, 288° and 360

I got this problem wrong and do not understand it and need to correct it.-example-1
I got this problem wrong and do not understand it and need to correct it.-example-2
User EmJeiEn
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