- Pythagorean theorem (Wikipedia)
In mathematics, the Pythagorean theorem or Pythagoras’ theorem is a fundamental relation in Euclidean geometry between the three sides of a right triangle. It states that the area of the square whose side is the hypotenuse (the side opposite the right angle) is equal to the sum of the areas of the squares on the other two sides.
- Ruhollah Khomeini (Wikipedia)
Ayatollah Ruhollah Musavi Khomeini (17 May 1900 or 24 September 1902 – 3 June 1989) was an Iranian Islamic revolutionary, politician and religious leader who served as the first supreme leader of Iran from 1979 until his death. He was the founder of the Islamic Republic of Iran and the leader of the Iranian Revolution, which overthrew Mohammad Reza Pahlavi and ended the Iranian monarchy.