A polygon is a closed 2D shape with straight sides that meet at vertices. Polygons can be regular or irregular. If all the straight sides of a shape are the same length and interior angles are the ...

In a remarkable new study, crows demonstrated an intuitive grasp of geometry—identifying irregular shapes without training.

Crows can recognize geometric patterns, suggesting that humans aren't unique in understanding shape structure.

Other critters might have an inherent sense of geometry, too, says Nieder ... started showing them sets of shapes that ...

Identifying 2D shapes Find out about regular 2D shapes and irregular polygons. What is an angle? Discover the different types of angles and how to make sure you get the biggest slice of pizza.

Survey the irregular polygon using standard surveying techniques, such as total station, GPS, or theodolite, to obtain accurate coordinate points for the vertices of the polygon. Perimeter ...