A small, rectangular window frames an autumn view, divided into four smaller rectangles. In a splayed opening, the stone windowsill widens into the room, forming a regular trapezium (a four-sided figure with two parallel sides and two which diverge).  Perspective makes the wooden shutter appear as a trapezium too, though experience tells it must be rectangular.

Cee’s photo challenge this week is looking for Polygons, plane figures ‘bounded by three or more straight sides that meet in pairs in the same number of vertices, and do not intersect other than at these vertices.’  So here is a collection of triangles, quadrilaterals, hexagons and even a few irregular pentagons…..

 

A view of the Loire from the Chateau d’Amboise – October 2016
Geometric extravagance at the Chateau de Chambord – August 2017
Gare-du-Nord geometry – January 2016
Gare d’Austerlitz – Paris – October 2016
Half timbered in Honfleur – October 2016
Noughts and crosses? – Paris 13 – April 2018
The Air Factory – Paris 13 – August 2017
Newcastle bridges – December 2019
Bridge geometry – La Villette – Paris – September 2015
Viaduc d’Austerlitz – Paris – May 2017

 

Click on any image to view the gallery.