4. What part of a revolution have you turned through if you stand facing
(a) east and turn clockwise to face north?
(b) south and turn clockwise to face east?
(c) west and turn clockwise to face east?
(a) If we are standing facing east and turn clockwise to face north we have turned through of a revolution.
(b) If we are standing facing south and turn clockwise to face east we have turned through of a revolution.
(c) If we are standing facing west and turn clockwise to face east we have turned through half of a revolution.