A new breakthrough may help scientists solve some of the mysteries of the quantum realm. For the first time, physicists have been able to measure the geometrical 'shape' a lone electron adopts as it ...

Radio astronomers have used a direct, geometric technique to precisely measure the distance to a faraway galaxy, demonstrating a vital tool for determining the nature of the mysterious dark energy ...

If we know the length of the base of an isosceles triangle, with the two long (very long!) sides being the distance to an object, then we can solve for that distance given just one angle.

To draw constructions you need a pencil, ruler and a pair of compasses. Loci are used to identify areas that satisfy criteria such as a given distance from a point or halfway between two lines.