In the episode What Is Pi? we learned how to draw a circle arts-and-crafts style. To do this, start by cutting a 3-inch piece of string to serve as the radius of the circle.

Marco Martins’ highly anticipated follow-up to his superb debut, “Alice,” is a deeply disappointing affair sure to leave an unpleasant aftertaste. “How to Draw a Perfect Circle” shows ...

THERE’S no getting around it - drawing a perfect freehand circle without even looking is a seriously impressive skill. And it’s been captured in this astonishing how-to video. Man begins to ...