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.
âI only regret that I have but one life to lose for my countryâ (Nathan Hale) Nathan Hale is celebrated as America's first spy. He was hung by British forces in New York City on September 22, 1776, and various memorials in the city celebrate his story.