Who Was Omar Khayyam And What Did He Do?

Who Was Omar Khayyam And What Did He Do? Omar Khayyam , famous mathematician, philosopher, poet and astronomer. , famous mathematician, philosopher, poet and astronomer. Omar Khayyam was a renowned mathematician, philosopher, poet and astronomer. He was the first mathematician to think about the ‘Saccheri quadrilateral’ in the 11th century. What is Omar Khayyam known