However, the electrical resistivity has twofold (180-degree) rotational symmetry like a rectangle. This "electronic nematicity" -- the discovery of which is reported in a paper published on May 4 ...

A 2D shape could have line symmetry or rotation symmetry ... A square has 4 right angles and 4 equal sides. A rectangle has 4 right angles, but not equal sides. Dawn’s shape could be a square ...

Still others — such as "O" — have rotational symmetry, where no matter how many degrees you rotate it, its appearance is unchanged. These are some examples of symmetry that are easy to ...

A 2D shape could have line symmetry or rotation symmetry ... A square has 4 right angles and 4 equal sides. A rectangle has 4 right angles, but not equal sides. Dawn’s shape could be a square ...