Which Greek mathematician wrote the most definitive text on geometry one that is still referred to today

Iam pretty sure it is answer c. meep i hope you have a great day ^^

Aregion is an area of land that has common features. these features can be natural, such as climate or landscape. they can also be artificial, such as language or religion. the xinjiang uyghur autonomous region, above, is an area of china inhabited by uyghurs, a muslim group with ethnic ties to turkish people.

Answer primary waves;

Answer glacier terminus;