Question

what defining characteristic of euclids postulates makes them the basis of geometry? postulates are \obvious\ statements that are assumed to be true postulates are a sentence describing different figures postulates are unnecessary postulates cant be assumed to be true, so they must be proven

Explanation:

Euclid's postulates are fundamental "obvious" statements in geometry that are assumed true without proof and form the basis for further geometric reasoning.

Answer:

Postulates are "obvious" statements that are assumed to be true