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Classifying Polygons by the Number of Sides

Polygons can be named, based on how many sides they have.

Listed below are some common polygons:

1. Triangle - 3 sides  

2. Quadrilateral - 4 sides

3. Pentagon -  5 sides

4. Hexagon -  6 sides

5. Heptagon - 7 sides

6. Octagon -  8 sides

7. Nonagon -  9 sides

8. Decagon - 10 sides

Let’s learn how to classify polygons by the number of sides they have.

1.

It has 8 sides, so it is an octagon.

2.


It has 10 sides, so it is a decagon.

3. 


It has 4 sides, so it is a quadrilateral.

4.

It has 5 sides, so it is a pentagon.

Summary:

A polygon is a closed figure made of line segments.

Polygons can be named, based on how many sides they have.

Some common polygon are::

1. Triangle - 3 sides  

2. Quadrilateral - 4 sides

3. Pentagon - 5 sides

4. Hexagon -  6 sides

5. Heptagon - 7 sides

6. Octagon -  8 sides

7. Nonagon -  9 sides

8. Decagon - 10 sides

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