Final answer:
John Rigas rationalized his dishonest use of company assets by perceiving pressure, opportunity, and rationalization.
Step-by-step explanation:
John Rigas rationalized his dishonest use of company assets by using the fraud triangle concept, which consists of perceived pressure, perceived opportunity, and rationalization. In Rigas' case, he may have felt pressure to meet financial expectations or personal financial needs, creating a perceived pressure. Rigas also had the opportunity to manipulate company assets due to his high position and control over the company. Finally, Rigas may have rationalized his actions by justifying them as necessary for the survival or success of the company, or for personal reasons.