Hello, I'm Mr Firth, and together we're going to learn about lines of symmetry. Symmetry is when one side of a shape looks exactly like the other—just flipped. Lots of buildings use symmetry because ...

Translations and reflections are examples of transformations of shapes. If a shape is transformed, its position and/or size is changed. Translation is when a shape slides across, up, down or ...

When you look in a mirror, you see an image of yourself in reverse. But one odd mirror invented by mathematics professor Dr. R. Andrew Hicks at Drexel University shows your true face without reversing ...