Penrose triangle
E340274
The Penrose triangle is an impossible optical illusion figure that appears to be a solid three-dimensional triangle but cannot exist in Euclidean space.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Penrose triangle canonical | 2 |
| Penrose tribar | 1 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
geometric figure
ⓘ
impossible object ⓘ optical illusion ⓘ visual paradox ⓘ |
| appearsAs | solid three-dimensional triangle ⓘ |
| cannotExistIn | Euclidean space ⓘ |
| hasAlternativeName |
Penrose triangle
ⓘ
surface form:
Penrose tribar
impossible triangle ⓘ tribar ⓘ |
| hasCulturalAssociation |
mathematical art
ⓘ
paradox ⓘ Surrealism ⓘ
surface form:
surrealism
|
| hasDimensionalityInDepiction | 2D drawing ⓘ |
| hasDimensionalityInIllusion | 3D object appearance ⓘ |
| hasEdgeCount | 3 ⓘ |
| hasMathematicalField |
geometry
ⓘ
recreational mathematics ⓘ |
| hasNotableUseIn |
graphic design
ⓘ
logo design ⓘ mathematics popularization ⓘ psychology of perception ⓘ |
| hasProperty |
globally inconsistent geometry
ⓘ
locally consistent geometry ⓘ non-Euclidean geometry illusion ⓘ |
| hasPublicationContext | British Journal of Psychology ⓘ |
| hasShape | triangular ⓘ |
| hasStudyField |
cognitive psychology
ⓘ
vision science ⓘ |
| hasTopologicalProperty | non-realizable in 3D Euclidean space ⓘ |
| hasYearOfPopularization | 1958 ⓘ |
| illustratesConcept |
conflict between local and global consistency
ⓘ
impossible geometry ⓘ limitations of human depth perception ⓘ visual ambiguity ⓘ |
| inspired |
M. C. Escher
ⓘ
surface form:
artworks by M. C. Escher
|
| isConstructedFrom | three straight beams in perspective ⓘ |
| isDepictedUsing |
forced perspective
ⓘ
isometric projection ⓘ |
| isRelatedTo |
Penrose stairs
ⓘ
surface form:
Escherian stairway
Necker cube ⓘ Penrose stairs ⓘ impossible cube ⓘ |
| isUsedAs |
symbol of impossibility
ⓘ
symbol of paradoxical thinking ⓘ |
| requiresForPhysicalModel |
alignment of separate 3D components
ⓘ
carefully chosen viewpoint ⓘ |
| wasPopularizedBy |
Lionel Penrose
ⓘ
Roger Penrose ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Penrose tribar