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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 ...

3. 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 ...

4. Pointing stick - Wikipedia

   en.wikipedia.org/wiki/Pointing_stick

   The velocity of the pointer depends on the applied force so increasing pressure causes faster movement. The relation between pressure and pointer speed can be adjusted, just as mouse speed is adjusted. On a QWERTY keyboard, the stick is typically embedded between the G, H and B keys, and the mouse buttons are placed just below the space bar ...

5. Roundness - Wikipedia

   en.wikipedia.org/wiki/Roundness

   Roundness = ⁠ Perimeter 2 / 4 π × Area ⁠. This ratio will be 1 for a circle and greater than 1 for non-circular shapes. Another definition is the inverse of that: Roundness = ⁠ 4 π × Area / Perimeter 2 ⁠, which is 1 for a perfect circle and goes down as far as 0 for highly non-circular shapes.

6. File:Circle sign 98.svg - Wikipedia

   en.wikipedia.org/wiki/File:Circle_sign_98.svg

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7. Box-drawing characters - Wikipedia

   en.wikipedia.org/wiki/Box-drawing_characters

   Box-drawing characters, also known as line-drawing characters, are a form of semigraphics widely used in text user interfaces to draw various geometric frames and boxes. These characters are characterized by being designed to be connected horizontally and/or vertically with adjacent characters, which requires proper alignment.