Nonagon

usgb/ˈnɑːnəɡɑːn/
noun

A shape or figure with nine sides and nine angles.

He drew a nonagon on the board during the geometry class.
Visual representation of "nonagon" - A shape or figure with nine sides and nine angles.

Often appears as...

  • regular nonagon
  • irregular nonagon

Usage tips

Technical

Definition 1 of 1
Visual representation of "nonagon"
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Geometry Term

Nonagon is primarily used in geometry to discuss shapes.

Illustration for Geometry Term
On our geometry quiz, we had to calculate the area of a nonagon.
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Regular vs. Irregular

A 'regular nonagon' has sides of equal length, unlike an 'irregular nonagon'.

Illustration for Regular vs. Irregular
The puzzle piece looked like an irregular nonagon.
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Angles Sum

The sum of interior angles in any nonagon is 1260 degrees.

Illustration for Angles Sum
The teacher explained that regardless of its shape, every nonagon's angles sum to 1260 degrees.
Visual representation of the word "Nonagon"

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