Name an angle complementary to Complementary angles add up to 90 degrees. COA is supplementary to AOE (they add up to 180) AOB is 90 degrees AOD is 180 degrees COB is complementary to COD. And because COD is congruent to AOE (because vertical angles are congruent), COB is also complementary to AOE. So our answer is COB.
Mad Libs was invented in 1953 by Leonard Stern and Roger Price. Stern and Price co-created the game, but couldn't agree on a name for their invention. No name was chosen until five years later (1958), when Stern and Price were eating eggs Benedict at a restaurant in New York City.
Swiss scientist who invented LSD and had first ever 'bad trip' dies at 102. By ALEXANDRA WILLIAMS. Last updated at 21:14 30 April 2008. Pandora's box: Albert Hofmann, who first synthesised the psychedelic drug LSD. The scientist who discovered the psychedelic drug LSD has died aged 102.Albert Hofmann-the first person to experience an acid trip-had a heart attack at his home near Basel on Tuesday. Mr Hofmann had been working as a chemist studying ergot fungus when he stumbled on lysergic acid diethylamide in 1943.wiss scientist who invented LSD and had first ever 'bad trip' dies at 102. By ALEXANDRA WILLIAMS. Last updated at 21:14 30 April 2008. Pandora's box: Albert Hofmann, who first synthesised the psychedelic drug LSD. The scientist who discovered the psychedelic drug LSD has died aged 102.