Types Of Regular Polygons

This lesson covers:

1 What polygons are

2 What the term ‘regular’ means when discussing polygons

3 The 8 main types of regular polygons you need to know

What is a 'polygon'?

A closed 2D shape with only straight sides

An open 2D shape with curved and straight sides

An open 2D shape with only straight sides

A closed 2D shape with curved and straight sides

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What is special about 'regular' polygons?

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Diagram showing an open square shape with a gap at the top.

Is the shape above a polygon?

No

Yes

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Image of a regular decagon polygon with ten equal sides.

Is the shape above a polygon?

No

Yes

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Irregular shape with one curved side questioning if it is a polygon.

Is the shape above a polygon?

Yes

No

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Grey outline of a pentagon shape on a black background.

Is the shape above a polygon?

Yes

No

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Regular hexagon shape with equal sides and angles.

All the sides on the above shape are the same length, and all the angles are equal.


What is the name of the shape?

Irregular Octagon

Octagon

Regular hexagon

Irregular hexagon

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Diagram of a regular hexagon.

How many lines of symmetry does a regular hexagon have?

6

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Diagram of a regular decagon with 10 sides.

The above shape is a regular decagon, a regular polygon with 10 sides.


What is it order of rotational symmetry?

10

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