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===Using a linkage=== [[File:Sylvester's Link Fan.svg|275px|thumb|Sylvester's Link Fan]] There are a number of simple [[Linkage (mechanical)|linkages]] which can be used to make an instrument to trisect angles including Kempe's Trisector and Sylvester's Link Fan or Isoklinostat.<ref>{{cite book|title=The Trisection Problem |url=http://files.eric.ed.gov/fulltext/ED058058.pdf#53 |archive-url=https://ghostarchive.org/archive/20221009/http://files.eric.ed.gov/fulltext/ED058058.pdf#53 |archive-date=2022-10-09 |url-status=live |first=Robert C| last=Yates |pages=39β42 |year=1942 |publisher=The National Council of Teachers of Mathematics}}</ref> {{Clear}}
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