That is an important theorem in geometry: if two lines intersect to form adjacent congruent angles, then the lines are perpendicular. Those congruent angles would be right angâ¦les.
Williams later became chief surgeon of the Freedmenâs Hospital. Daniel Hale Williams III was born on January 18, 1856, in Hollidaysburg, Pennsylvania, to Sarah Price Williams and Daniel Hale Williams II. The couple had several children, with the elder Daniel H. Williams inheriting a barber business.
On 28-9-1986 Daniel Platzman (nickname: Daniel) was born in  Atlanta, Georgia, United States. The musician is in 2017 famous for Night Visions, Smoke + Mirrors, Live at Independent Records. Daniel Platzmanâs starsign is Libra and he is now 30 years of age.