After taking gold in the halfpipe snowboarding event in each of the past two Olympics, American star Shaun White was in line to add some additional hardware to his trophy case with a medal in the new slopestyle event in Sochi...
Any point of an oval belongs to an arc with a constant radius (shorter or longer), but in an ellipse, the radius is continuously changing. In common speech. In common speech, oval means a shape rather like an egg or an ellipse, which may be two-dimensional or three-dimensional.
Copyright Amazing Discoveries. The round disc in the crescent moon was a symbol of ancient Babylon, and is found in all the ancient religions. In Catholic cathedrals, these symbols are very prominent, often depicting a round form of mother and child within the crescent moon.