Article View: sci.electronics
Article #19516Re: Constant Breadth Manhole(was Re: WHat are those holes for?)
From: Richard Harter
Date: Tue, 26 Jul 1988 02:04
Date: Tue, 26 Jul 1988 02:04
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In article <1211@nscpdc.NSC.COM> patch@nscpdc.NSC.COM (Pat Chewning) writes: >In article <745@io.ATT.COM>, tmk@io.ATT.COM (59481[rjb]-t.m.ko) writes: >> Construct an equilateral triangle ABC. Draw arc AB with center C. >> Draw arc BC with center A. Draw arc AC with center B. >> The resulting figure bounded by the 3 arcs is a constant breadth figure. >I created the three arcs as desribed, I GOT A CIRCLE! >If there is something I am missing, please let me know. What you are missing is a good compass (protractor). If that is not your problem, reflect on the fact that circles do not generally come with three centers and do the following: Find the midpoint of the equilaterial triangle. Call it O. Draw a circle with center O through A, B, and C. Compare this with the figure previously drawn. -- In the fields of Hell where the grass grows high Are the graves of dreams allowed to die. Richard Harter, SMDS Inc.
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!husc6!cca!g-rh From: g-rh@cca.CCA.COM (Richard Harter) Newsgroups: sci.electronics,sci.math Subject: Re: Constant Breadth Manhole(was Re: WHat are those holes for?) Message-ID: <31374@cca.CCA.COM> Date: 26 Jul 88 02:04:09 GMT References: <10790@oberon.USC.EDU> <327@richp1.UUCP> <303@btree.uucp> <745@io.ATT.COM> <1211@nscpdc.NSC.COM> Reply-To: g-rh@CCA.CCA.COM (Richard Harter) Organization: Computer Corp. of America, Cambridge, MA Lines: 23