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  2. Alexander Overwijk - Wikipedia

    en.wikipedia.org/wiki/Alexander_Overwijk

    To further his claim, he would hand-draw a circle on the blackboard. In 2007, a video of Overwijk drawing a near-perfect circle for his class went viral on YouTube. [5] [6] Although the original story was a fabrication, he hosted a real "World Freehand Circle Drawing Championship" as a fundraiser for the Canadian Cancer Society following his ...

  3. Compass (drawing tool) - Wikipedia

    en.wikipedia.org/wiki/Compass_(drawing_tool)

    A beam compass and a regular compass Using a compass A compass with an extension accessory for larger circles A bow compass capable of drawing the smallest possible circles. A compass, also commonly known as a pair of compasses, is a technical drawing instrument that can be used for inscribing circles or arcs.

  4. Ralph Teetor - Wikipedia

    en.wikipedia.org/wiki/Ralph_Teetor

    Ralph Teetor (August 17, 1890 – February 15, 1982) was a prolific inventor who invented cruise control.He was the longtime president of the automotive parts manufacturer The Perfect Circle Co. (acquired in 1963 by Dana Holding Corporation, then sold to Mahle GmbH in 2007) in Hagerstown, Indiana, a manufacturer of piston rings.

  5. How to Draw a Perfect Circle - Wikipedia

    en.wikipedia.org/wiki/How_to_Draw_a_Perfect_Circle

    How to Draw a Perfect Circle (Portuguese: Como Desenhar um Círculo Perfeito) is a 2009 Portuguese drama film directed by Marco Martins and starring Rafael Morais, Daniel Duval, Joana de Verona, Beatriz Batarda, and Albano Jeronimo. Its plot revolves around a young man named Guilherme and his sister Sofia who grow up sharing experiences and ...

  6. Dana Incorporated - Wikipedia

    en.wikipedia.org/wiki/Dana_Incorporated

    In 1963, Dana acquired the Perfect Circle Company. [5] In 1972, Dana bought a 35% stake in Wolverhampton-based engineering company, Turner Manufacturing. [6] The remaining shares were acquired a few years later. In 2006, Dana filed for bankruptcy. [7] In 2007, Dana canceled 150 million shares of stock during their bankruptcy. [8]

  7. Theory of forms - Wikipedia

    en.wikipedia.org/wiki/Theory_of_forms

    The Forms are perfect and unchanging representations of objects and qualities. For example, the Form of beauty or the Form of a triangle. For the form of a triangle say there is a triangle drawn on a blackboard. A triangle is a polygon with 3 sides. The triangle as it is on the blackboard is far from perfect.

  8. Talk:How to Draw a Perfect Circle - Wikipedia

    en.wikipedia.org/wiki/Talk:How_to_Draw_a_Perfect...

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  9. Roundness - Wikipedia

    en.wikipedia.org/wiki/Roundness

    Roundness is the measure of how closely the shape of an object approaches that of a mathematically perfect circle.Roundness applies in two dimensions, such as the cross sectional circles along a cylindrical object such as a shaft or a cylindrical roller for a bearing.