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Math Forum » Discussions » Math Topics » geometry.pre-college.independent

Topic: Outside Activities
Replies: 5   Last Post: Oct 22, 2007 6:13 PM

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Ryan

Posts: 1
From: VT
Registered: 10/22/07
Re: Outside Activities
Posted: Oct 22, 2007 6:13 PM
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This is similar to that problem.
A long log was placed parallel to the shore and the angles between the ship and the log (one angle at each end) were measured. These angles were reproduced on the other side of the log (towards the land) and the rays formed by these angles were extended until they intersected. Thales claimed that the distance between the ship and the log was the same as the distance between the new point of intersection and the log, a distance that could easily be measured since it was on land.

Is this method valid?



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