Human-Computer Interaction Resource Network
| The impossible Triangle | |
| The Penrose triangle, also known as the Penrose tribar, is an impossible object. It was first created by the Swedish artist Oscar Reutersvärd in 1934. The mathematician Roger Penrose independently devised and popularised it in the 1950s, describing it as | |
| H2 tags : The Impossible Triangle; The REAL impossible triangle |
| Last Update : | 25/December/2011 |
| Google PR : | 2 |
| Internal links : | 49 |
| External links : | 16 |
| Archive : | Check how did the site look in the past? |
| Keyword | Occurrences | Percentage |
|---|---|---|
| triangle | 17 | 3.46% |
| impossible | 12 | 2.44% |
| object | 11 | 2.24% |
| penrose | 9 | 1.83% |
| real | 4 | 0.81% |
| Keyword | Occurrences | Percentage |
|---|---|---|
| impossible triangle | 6 | 2.44% |
| in the | 5 | 2.04% |
| penrose triangle | 5 | 2.04% |
| the penrose | 4 | 1.63% |
| the real | 3 | 1.22% |
| Keyword | Occurrences | Percentage |
|---|---|---|
| the penrose triangle | 3 | 1.83% |
| real impossible triangle | 3 | 1.83% |
| the real impossible | 3 | 1.83% |
| an object can | 2 | 1.22% |
| you still doubt | 2 | 1.22% |
| Site IP address : | 82.165.80.109 |
| Server type : | Apache |
| Powered by : | PHP/5.2.17 |
| MX Domain 1 : | mx00.1and1.fr |
| MX Domain 2 : | mx01.1and1.fr |
| Alexa rank : | no data |
| Description : |
| free wheels gif | 25.20% |
| http://www.triangleimpossible.de | 12.48% |
| https://www.triangleimpossible.de | 11.71% |
| triangle impossible | 10.66% |
| impossible animate gif | 9.21% |
| wikipedia sculpteo | 9.07% |
| impossible triangle 2 | 6.84% |
| sculpteo | 5.68% |
| sculpteo wikipedia | 4.51% |
| cube de penrose | 4.38% |
| Quantcast rank : | 0 | Average US daily traffic : | 0 |
| Compete rank : | 3,376,676 |
| Average daily unique visitors : | 230 |
| MyWot rank : | 0 |
| Trustworthiness : | 80 |
| Vendor reliability : | 0 |
| Privacy : | 0 |
| Child safety : | 0 |
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