47. Trammel! Van Schooten's Locus Problem

[i]Two vertices of a rigid triangle slide along two fixed arms in the plane. What is the locus of the third vertex?[/i] Sometimes Geogebra is like having a master geometer in one's back pocket. If the two arms are fixed at a right angle, and C is in a straight line with AB, we have Archimedes' (?) Trammel. A working model is here: [url]http://www.geogebratube.org/material/show/id/71230[/url] ____ This is problem # 47 in Heinrich Dorrie's [i]100 Great Problems of Elementary Mathematics[/i].

 

Ryan Hirst

 
Resource Type
Activity
Tags
archimedes  ellipse  geometry  plane  trammel 
Target Group (Age)
19+
Language
English (United States)
 
 
GeoGebra version
4.2
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