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Compass and straightedge constructions

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  1. Compass-and-straightedge or ruler-and-compass construction is the construction of lengths or angles using only an idealized ruler and compass

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on December 30, 2008
  2. Simon Plouffe has written a paper showing how ruler and compass can be used as a simple computer with unexpected power to compute binary digits of certain numbers

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on December 30, 2008
  3. The ruler to be used is assumed to be infinite in length, has no markings on it and only one edge, and is known as a straightedge

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on December 30, 2008
  4. The compass is assumed to collapse when lifted from the page, so may not be directly used to transfer distances. (This is an unimportant restriction, as this may be achieved via the compass equivalence theorem.) Every point constructible using straig

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on December 30, 2008
  5. A number of ancient problems in plane geometry impose this restriction

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on December 30, 2008
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