The amazing thing about grid cells is that the multiple place fields are in precise geometric relation to each other and form a tessellated array of equilateral triangles, a â $ ˜gridâ $ ™ that tiles the entire environment. (emoryhealthsciblog.com)
For example «what did the people who were looking at equilateral triangles find out about the interior angles?». (greatmathsteachingideas.com)
In the Carrington - L5 mission, Lagrange point L5 designates a position located in the third corner of an imaginary equilateral triangle, if that triangle was drawn in the plane of orbit with a common base line that lay in the centers of the two masses. (newatlas.com)