Fibonacci Spiral?
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 From:  864kD1998 (BOB1998) 4 Dec 2018  (25 of 29) 
7356.25 
hello is there a way to draw a 137.5 by 85 degree angle using only a compass and a straight edge?
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 From:  Michael Gibson 4 Dec 2018  (26 of 29) 
7356.26 In reply to 7356.25 
Hi Bob - I'm sorry I don't understand your question, is that something you're trying to draw in MoI ?

- Michael
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 From:  864kD1998 (BOB1998) 4 Dec 2018  (27 of 29) 
7356.27 In reply to 7356.26 
Yes, I'm trying to construct a Golden angle of 137.5 by 137.5 by 85 degrees approximate in a circle using a compass and a straight edge.Which can be done on a piece of paper.
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 From:  bemfarmer 4 Dec 2018  (28 of 29) 
7356.28 In reply to 7356.27 
I recall from math class that the square root of 5 can be so constructed...
- Brian
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 From:  bemfarmer 4 Dec 2018  (29 of 29) 
7356.29 In reply to 7356.28 
According to this link, the answer is YES :-)
https://www.johndcook.com/blog/2017/05/01/golden-angle/

But the method is not given...

- Brian

After reading google links on "Constructible Angles," I'll conclude that construction of 137.5 degrees is NOT possible with compass and straigtedge...

EDITED: 4 Dec 2018 by BEMFARMER
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