Astronomers have observed unusually shaped galaxies in a transitory phase of galactic evolution, often colliding or ...

Meet Bille, the name given to the world's first monostable tetrahedron—a four-faced object that will always land on the same ...

Now, with geometry added to the list of impressive skills that crows have to offer, it’s clear that these animals are smart in ways we’re only beginning to appreciate.

What’s more, their ability didn’t depend on familiarity. The shapes were randomly rotated and scaled. The irregular shape, called the “intruder,” changed position every trial. Yet both crows ...

In the study, they could tell the difference between shapes like stars, crescents and squares, as well as between squares and irregular figures with four sides.

It had grasped something many scientists once believed only humans could truly understand: the intuitive logic of shapes. Crow geometry We humans are seemingly born with geometry.

Crows in a lab were able to distinguish shapes that exhibited right angles, parallel lines, and symmetry, suggesting that, like humans, they have a special ability to perceive geometric regularity.

Recently, Nieder wondered what the crows knew about geometry. Could the crows distinguish regular shapes, like squares or parallelograms, from irregular quadrilaterals?

How to incorporate curvy and irregular shapes into your home décor April 11, 2025 at 7:00 am Updated April 11, 2025 at 7:00 am By Amber Katz ...

Grains of lamellae with parallel orientation are characterized by irregular polygon shapes and are bounded by defect regions where the lamellae are oriented out of the plane of the film.

Among all the shapes we can construct with a compass and straightedge, regular polygons hold a special cachet. The Greeks didn’t impose arbitrary rules just to make math more challenging.

Mathematicians are interested in shapes that have one additional constraint: central symmetry. Without it, the worst known shape is the seven-sided regular heptagon (space filled: about 89.27%), ...