2D shapes can be found printed in a book or on a website. 2D shapes have sides and corners. A rectangle has 4 straight sides and 4 corners. A square is a special type of rectangle, where all 4 ...

Explore five-, four- and three-sided polygons. Find out how they can change if their sides stay the same length. Create new shapes that always have the same side lengths. Experiment with the circle as ...

Crows have a sense of geometric intuition much like our own, a new study reveals. They can detect the 'odd one out' in a set of geometric shapes, and have an affinity for geometric regularity – shapes ...

The ancient Greek mathematician Euclid proved in his Elements of Geometry that there are only five Platonic solids – the regular tetrahedron (four sides that are equilateral triangles), the cube (six ...

Now, a new study adds basic geometry to the list of subjects these ... as well as between squares and irregular figures with four sides. Researchers once thought this ability was unique to humans.