Explore four-sided shapes looking at straight lines, curved lines and 2D shapes. What are 3D shapes? Learn about 3D shapes and their properties. What is tessellation? Find out how tessellation is when ...

A prism is a 3D shape which has a constant cross section - both ends of the solid are the same shape and anywhere you cut parallel to these ends will give you the same shape. For example, in the prism ...

Not everyone is in love with the 3D phenomenon. Sensitive viewers can slap on a set of special 2D Glasses and convert those pesky 3D movies back into 2D. Freelance writer Amanda C. Kooser covers ...

Up until about two decades ago, all mammograms were done using an X-ray machine, which generated two-dimensional (2D) images of breast tissue. In 2011, however, the U.S. Food and Drug Administration ...

Three-dimensional imaging outperformed older digital mammography at reducing anxiety-producing callbacks for more breast cancer testing, a new study shows. The research, published this month in the ...