There are several synonyms for the phrase "study at circumference," which generally refers to examining something from all angles or perspectives. Other phrases that can be used interchangeably include "analyze comprehensively," "investigate thoroughly," "scrutinize in detail," and "explore broadly." These terms all imply a deep dive into a topic, subject, or issue with the intention of gaining a more complete understanding of it. When approaching any kind of research or exploration, it's important to take a comprehensive approach that considers multiple angles and perspectives. Using these related synonyms as guides can help you develop a more holistic view of any topic at hand.