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Classifying Polygons by the Number of Sides

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Polygons are closed shapes or figures in a plane with three or more sides.

Polygons are classified by how many sides they have.

Following lists the different types of polygons and the number of sides that they have:

Classifyingp 1

  • A triangle is a three-sided polygon.

Classifyingp 2

  • A quadrilateral is a four-sided polygon.

Classifyingp 3

  • A pentagon is a five-sided polygon.

Classifyingp 4

  • A hexagon is a six-sided polygon.

Classifyingp 5

  • A heptagon is a seven-sided polygon.

Classifyingp 6

  • An octagon is an eight-sided polygon.

Classifyingp 7

  • A nonagon is a nine-sided polygon.

Classifyingp 8

  • A decagon is a ten-sided polygon.
Summary
  • Polygons are closed shapes or figures in a plane with three or more sides.
  • Polygons are classified by how many sides they have.

Some common polygons are shown in the table given below:

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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