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How to find the center point of a circle
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Luigi:
hehe.....I only thought "Why would someone use a compass to draw a circle??"

I didn't know that it's also the word for this:



(Picture lent from www.werbekonzepte.com)


I only thought of this:



(Picture lent from www.ruhr-uni-bochum.de)


 ;D

pmc:
I usually draw a bunch of lines right thru the circle. As long as you are getting the full diameter of the circle for each line, they should all cross at the center. No compass needed, but I guess it's not perfect. It always works OK for me.

You could draw a square around the circle and then draw lines between the opposite corners. That would locate the center of the circle. Kinda like you do when you set up a lathe.

-pmc
Ummon:
I'm wondering where you're getting the circle in the first place, if you haven't drawn it. If you have, don't you already know its dimensions and center point?
pmc:

--- Quote from: Ummon on August 19, 2008, 04:43:21 pm ---I'm wondering where you're getting the circle in the first place, if you haven't drawn it. If you have, don't you already know its dimensions and center point?

--- End quote ---

I sometimes use a coffee can or whatever other container is laying around that's about the right size. It's fast and easy to just position and then trace. I can get the job done well before I could locate a compass.

Point taken that if you use a compass, by definition you have the exact center point already. :)

-pmc
mcdubbin:

--- Quote from: Luigi on August 18, 2008, 04:48:51 am ---hehe.....I only thought "Why would someone use a compass to draw a circle??"

I didn't know that it's also the word for this:



(Picture lent from www.werbekonzepte.com)
I only thought of this:

(Picture lent from www.ruhr-uni-bochum.de)

--- End quote ---


thought the samething ???
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