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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. 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.

5. Microsoft Entertainment Pack: The Puzzle Collection

   en.wikipedia.org/wiki/Microsoft_Entertainment...

   Finty Flush - Fill a 4×4 grid with predetermined combinations of marbles before the screen fills up with too many marbles. Mixed Genetics - Breed mutated animals in groups of three to create pure animals. Rat Poker - Coloured rats enter and walk clockwise around a playing area. Rats will only exit if they line up in specific patterns such as ...

6. Pointing device - Wikipedia

   en.wikipedia.org/wiki/Pointing_device

   A mouse is a small handheld device pushed over a horizontal surface. A mouse moves the graphical pointer by being slid across a smooth surface. The conventional roller-ball mouse uses a ball to create this action: the ball is in contact with two small shafts that are set at right angles to each other.

7. KoalaPad - Wikipedia

   en.wikipedia.org/wiki/KoalaPad

   The pad was four inches square (i.e. roughly 10×10 cm) and mounted on a slightly inclined base with the back of the pad higher than the front. At the top, "behind" the pad, were two buttons. The pad hooked into the computer using the analog signals of the joystick ports (the so-called paddle inputs), which meant that it had a low resolution ...