Who wrote over 400 geometry theorems?

To find out who wrote over 400 geometry theorems, you can follow these steps:

1. Start by researching the history of geometry and the prominent mathematicians associated with its development.
2. Take note of mathematicians who have significantly contributed to the field of geometry.
3. Consider mathematicians who have published extensive works on geometry.
4. Look for information on mathematicians who have written numerous geometry theorems.
5. Cross-reference the obtained information to ensure accuracy and reliability.
6. Pay attention to mathematicians who are well-known for their work in geometry and have made significant contributions to the subject.

Based on these steps, one mathematician who is widely recognized for his contributions to geometry and who wrote an extensive number of theorems is Euclid. Euclid was a Greek mathematician who lived around 300 BCE and is known for his book "Elements." This work includes a compilation of over 400 geometry theorems and has greatly influenced the study of geometry. Therefore, Euclid can be considered a major figure who wrote over 400 geometry theorems.