Use Postulates and Diagrams
#OPYRIGHT???-C$OUGAL?,ITTELL?(OUGHTON?-IFFLIN?#OMPANY?? ,ESSON?????s?'EOMETRY?.OTETAKING?'UIDE? ? ?? 9OUR?.OTES ??? 5SE?0OSTULATES?AND?$IAGRAMS 'OAL? +?5SE?POSTULATES?INVOLVING?POINTS??LINES??AND?PLANES? 6/#!"5,!29 ,INE?PERPENDICULAR?TO?A?PLANE???????i?????i??i?`?V??>?? ???>???>?i??v?>?`???????v???i????i????i??iV?????i???>?i? ???>???????>?`?????i??i?`?V??>?????i?i??????i??????i? ??>?i???>?????i??iV??????>????>???????? 0/).4??,).%??!.$?0,!.%?0/345,!4%3 0OSTULATE??? ?4HROUGH?ANY?TWO?POINTS?THERE?EXISTS?EXACTLY? ONE?? ???i? ? 0OSTULATE??? !?LINE?CONTAINS?AT?LEAST?TWO?? ??????? ? 0OSTULATE??? ?)F?TWO?LINES?INTERSECT??THEN?THEIR?INTERSECTION? IS?EXACTLY?? ??i??????? ? 0OSTULATE??? ?4HROUGH?ANY?THREE?? ???V?????i>?? ?POINTS? THERE?EXISTS?EXACTLY?ONE?PLANE?