|Jun26-12, 05:10 PM||#1|
Weird configuration of the Desargues' theorem. Is it correct?
Two triangles are in perspective axially if and only if they are in perspective centrally.
I was wondering if this particular configuration was correct:
http://garciacapitan.99on.com/bella/imgs/desarg2.gif (copy-paste the link ir it doesnt show you the image or doble click on the attached thumbnail)
I don't know if it is even possible for the center of perspectivity (O) be in-between the two triangles. Also I believe that the perspectivity axis (P,Q,R) isn't horizontal.
My first thought was that the correspondent vertices were wrongly located but then again I found this in a geometry book. So please could you help me? Are the correspondent vertices wrongly located or am I not undertanding? HELP please!
|correspondent, desargues, geometry, perspective, triangles|
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