Geological Chronicle
Located near the eastern edge of Oceanus Procellarum roughly 30 kilometers west of Montes Riphaeus, Euclides measures 11.8 kilometers across. The surrounding mare is devoid of significant craters, though an area of low rises extends to the west.
The formation is bowl-shaped with a circular rim, surrounded by streaks of ejecta that exhibit a higher albedo than the neighboring maria. Under a high Sun, this skirt of light-hued material makes Euclides one of the brightest sites on the Moon.
T. W. Webb described Euclides as the finest example of an infrequent variety he termed the light-encompassed crater, noting it as deep, regular, bright, and closely wrapped in a luminous cloud. The feature was named for Euclid, the Greek mathematician.