Question: Distinguish a defacto corporation from a de jure corporation and a corporation by estoppel.

Here's your basis: DE JURE CORPORATION One that has been created in strict compliance with all the legal requirements of the law

DE FACTO CORPORATION one that is defectively created but there is an exercise of corporate rights and franchise resulting from an attempt in good faith to incorporate on the part of its partner.

CORPORATION BY ESTOPPEL one which is in reality not a corporation but is considered as one with respect to those who are precluded by their admission from denying its existence.