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.
The body should be triangular, stable, the mind circular, open. The triangle represents the means for generation of good energy, and is the most stable physical posture. The circle symbolizes serenity and perfection, and the source of unlimited potential. Together they represent the perfect union of mind and body. It has been used in many native cultures.