reentrant angle
- noun
- /rɪˈɛntrənt ˈæŋɡəl/
- Specialized
:
ángulo reentrante
- When drawing the floor plan, the architect identified a reentrant angle in the alcove corner.
Examples
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The concave polygon had a single reentrant angle that pointed inward.
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A reentrant angle can create unique architectural designs.
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A star-shaped figure is characterized by its multiple reentrant angles at the narrow points.
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The polygon featured a reentrant angle that made it look unusual.
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The complex design of the star-shaped building included several reentrant angles that created unique interior spaces.
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In geometry class, we learned that a polygon with a reentrant angle must have at least one angle greater than 180 degrees.
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Architects often use reentrant angles in their designs to make structures more visually interesting and functional.
Synonyms
An inside corner of a shape that points inward more than a straight line
An angle larger than 180 degrees but smaller than 360 degrees
An inward curve in a shape or building that makes a small hollow
Antonyms
How Large
- Specialized
- Specialized
1
3.4
- Specialized
16
2.4
- Specialized
1
2.8
Surface Forms
Morphology
reentrant + angle
The noun 'angle' is transparent but 'reentrant' is a rare, technical adjective; while its form (re- + entrant) can hint at 'turning back' or 'inward', the precise geometric sense of an interior angle greater than 180° is specialized and not fully predictable from the parts for a B1 learner. Therefore the compound is partially compositional—learners may infer a general inward-turning sense but would need technical exposure to grasp the exact meaning.
Etymology
Reentrant angle comes from the idea of a corner that 're-enters' the shape: re- means 'back' and entrant means 'entering', so the corner turns inward. That's why it describes an inside corner that points into the shape and is more than 180 degrees.