The Odyssey: A Modern Sequel quickly becomes dissatisfied with his quiet family life and they too with his brutality. First he travels to Sparta to save Helen, the wife of the king of Sparta Menelaus, whose abduction by Paris had led to the Trojan War. He goes to Crete where a conspiracy dethrones the king. He is abandoned by Helen who runs off with a black slave and continues to Egypt, where again a workers' uprising takes place. He leaves again on a journey up the Nile eventually stopping at the lake-source. Upon arrival his companions set up camp and he climbs the mountain in
Menelaus of Alexandria great circle arcs, which he named "trilaterals") and proves Menelaus' theorem on collinearity of points on the edges of a triangle (which may have been previously known) and its analog for spherical triangles. It was later translated by the sixteenth century astronomer and mathematician Francesco Maurolico. The lunar crater Menelaus is named after him. The titles of a few books by Menelaus have been preserved: Menelaus of Alexandria Menelaus of Alexandria (; , "Menelaos ho Alexandreus"; c. 70 – 140 CE) was a Greek mathematician and astronomer, the first to recognize geodesics on a curved surface as natural analogs of