- Title
- One coincidence after another!
- Creator
- Percy, Andrew; Carr, Alistair
- Date
- 2011
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/39524
- Identifier
- vital:6329
- Identifier
- ISSN:0025-5653
- Abstract
- The authors explain why the geometrical coincidences in the windmill diagram of mathematician Euclid did not occur by chance. One of them is the intersection of segments —AL, —FC and —KB at a point. To determine the orthocentre which is the point of intersection of the altitudes of triangle, they had to construct parallelograms and look for the perpendicular bisectors. For triangle PBC, they found that its orthocentre will give coincidence of the altitude spread from A.
- Relation
- Mathematical Spectrum Vol. 44, no. 1 (2011), p.
- Rights
- Copyright Applied Probability Trust
- Rights
- Open Access
- Rights
- This metadata is freely available under a CCO license
- Subject
- Geometry; Charts, diagrams, etc.; Altitudes; ParallelogramsCr
- Full Text
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