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.
Lucy Hale Celebrates a 'Pretty Little' Birthday. Lucy Hale rocks a neon blazer while arriving at Beso on Saturday (June 9) in Hollywood. âExcited to celebrate my (early) birthday with my friends tonight!â the Pretty Little Liars star, who turns 23 on June 14, tweeted earlier in the evening.