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.
Nancy, Sally, Robert, Fanny, Drucilla, and Nehemiah, Jr. -Nancy Daniel was born about 1786 and died October 25, 1877, in Wyoming. County, West Virginia. She married John Allen, Sr., son of William Allen, Jr., and Anne. Stewart, on December 26, 1805, in Patrick County, Virginia.