New work on the problem of “scissors congruence” explains when it’s possible to slice up one shape and reassemble it as another. If you have two flat paper shapes and a pair of scissors, can you cut ...

Mathematicians are creating their own version of the periodic table that will provide a vast directory of all the possible shapes in the universe across three, four and five dimensions, linking shapes ...

Through modeling and experiments, researchers uncover a previously undescribed shape -- they call a 'scutoid' -- adopted by packed epithelial cells during embryonic development; discovery could lead ...