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December 21st, 2010, 06:49 PM   #1
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straight line

How do we draw a straight line??
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December 21st, 2010, 08:34 PM   #2
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Re: straight line

To what degree of precision?
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December 21st, 2010, 10:59 PM   #3
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Re: straight line

I'm pretty fond of rulers myself, though I often use the straight side of a protractor because it makes me look smarter. My father was really level-headed, and for big lines we would trace the outline of his head.

What, exactly, are you looking for?
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December 22nd, 2010, 04:15 AM   #4
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Use Peaucellier's linkage.
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December 22nd, 2010, 12:32 PM   #5
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Re: straight line

Quote:
Originally Posted by skipjack
Whoa. This is a concept both new and interesting to me. On the A-Frame one, where he poses the question of whether we know why it goes in a straight line... why does it go in a straight line?
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December 23rd, 2010, 08:43 AM   #6
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Re: straight line

Use a slide rule and you'll look even smarter.
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December 23rd, 2010, 09:47 AM   #7
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Re: straight line

Produce a 1-dimensional object in and you'll look like a (trivial) genius!
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December 23rd, 2010, 08:15 PM   #8
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Re: straight line

Perhaps we should assume the Greek's magical straightedge, which can draw a perfectly straight line between any two points no matter how far.
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