# Number of Sides in a Polygon

Test your knowledge of polygons! A polygon a 2 dimensional shape, typically called a plane figure, with at least three straight sides and angles. Polygons are are made of straight lines, and all the lines connect with no gaps and no overlap.

Here are the basic polygons from 3 sides to 10 sides:

3 trigon (triangle)

4 tetragon (quadrilateral)

5 pentagon

6 hexagon

7 heptagon (septagon)

8 octagon

9 nonagon (enneagon)

10 decagon

If you’re looking for more detail, check-out this list of polygons.

Practice your polygon skills with a short quiz.

## Pop Quiz: Sides of a Polygon

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*Pop Quiz: Sides of a Polygon*. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%
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Question 1 |

Which of the following has more sides than a heptagon?

nonagon Hint: A nonagon has 9 sides. | |

tetragon Hint: A tetragon has 4 sides. | |

hexagon Hint: A hexagon has 6 sides. | |

pentagon Hint: A pentagon has 5 sides |

Question 1 Explanation:

A heptagon has 7 sides. A nonagon has 9 sides so a nonagon is the correct answer.

Question 2 |

How many sides does a septagon have?

7 | |

6 | |

9 | |

8 |

Question 2 Explanation:

A septagon has 7 sides so 7 is the correct answer.

Question 3 |

Which of the following polygons has an even number of sides?

pentagon Hint: A pentagon has 5 sides | |

nonagon Hint: A nonagon has 9 sides | |

octagon Hint: An octagon has 8 sides | |

septagon Hint: A septagon has 7 sides |

Question 3 Explanation:

An octagon has 8 sides. The number 8 is an even number so octagon is the correct answer.

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There are 3 questions to complete.