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.
Daniel Bell, the writer, editor, sociologist and teacher who over seven decades came to epitomize the engaged intellectual as he struggled to reveal the past, comprehend the present and anticipate the future, died on Tuesday at his home in Cambridge, Mass. He was 91. His daughter, Jordy Bell, confirmed the death.