The Eyeballing Game is a wildly addictive way to test your ability to see and make shapes, lines, and angles. The Eyeballing Game is a wildly addictive way to test your ability to see and make shapes, ...

ANAHEIM, Calif. - How do you control contrast and density? When do you want a long cone and when a short one? And what's a bisecting angle, anyway? Brad Potter, D.D.S., M.S., a University of Colorado ...