WordNet-Online
Free dictionary and thesaurus of English. Definitions, synonyms, antonyms and more...
Hint: double-click any word to get it searched!

	Enter your search terms Submit search form
	Web www.wordnet-online.com

Definitions from WordNet

Definitions from the Web

Reentrant Polygon

A reentrant polygon is a polygon that has at least one angle greater than 180 degrees, causing it to have an inward pointing vertex. It is also referred to as a concave polygon.

Examples:

1. The shape of the letter 'C' can be considered as a reentrant polygon.
2. The irregular pentagon had two reentrant angles, making it a reentrant polygon.
3. Many architectural designs incorporate reentrant polygons to add unique aesthetic appeal.

Note: Reentrant polygons are often contrasted with convex polygons, which have all angles less than 180 degrees and no inward pointing vertices.

Related Products:

Explore books about geometry and polygonal shapes on Amazon:

• Geometry Books
• Polygon Shapes