Archivo: A proportion to conceive square root of 5

Descripción: An area ratio between similar figures equals the square of the ratio between corresponding lengths of such figures – length ratio called the ratio of this similarity –. The image shows a first right triangle, of which the perpendicular sides measure 1 and 2. All congruent to this small triangle, the elements of tessellation numbered from 1 to 4 form a triangular tessellation, similar to the largest tiling and the initial triangle, because of their equal angles. Two enlargements to scales of √4 = 2 or √5, because of their areas multiplied by 4 or 5. This result can be found again by writing the proportionality between side lengths. The Pythagorean theorem is another way to find this unique positive number of which the square is 1 2 + 2 2: square root of 5.
Título: A proportion to conceive square root of 5
Créditos: Trabajo propio
Autor(a): Arthur Baelde
Términos de Uso: Creative Commons Attribution-Share Alike 4.0
Licencia: CC BY-SA 4.0
Enlace de Licencia: https://creativecommons.org/licenses/by-sa/4.0
¿Se exige la atribución?: Sí
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