reentering angle
Definition
Noun: * An interior angle of a polygon that is greater than 180 degrees: A reentering angle is a type of interior angle found in concave polygons. It points inward, creating an indentation or "cave" in the shape's outline.
Examples of Usage
- Noun:
- The star shape has several reentering angles.
- To identify a concave polygon, look for at least one reentering angle.
- The architect designed a courtyard with a reentering angle to create a sheltered space.
Advanced Usage
- In geometry and surveying: The term is often used to describe the specific angles in irregular plots of land or complex figures where the boundary line turns back into the property.
- The survey noted a reentering angle at the northwest corner of the lot.
Variants and Related Words
- Reentrant angle: This is a direct synonym and is used interchangeably with "reentering angle."
- Concave polygon: A polygon that has at least one reentering angle.
- Reflex angle: In a more general sense, any angle greater than 180° but less than 360° is called a reflex angle. A reentering angle is a specific type of reflex angle that is an interior angle of a polygon.
Synonyms
- Reentrant angle
- Reflex interior angle (context-specific)
Antonyms
- Salient angle: An interior angle of a polygon that is less than 180 degrees. This is the more common type found in convex polygons.
Noun
-
an interior angle of a polygon that is greater than 180 degrees
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