Приложение 1 Опорные задачи
В АС К S ABK S KBC AK KC
B M A C H K S ABC S AMC BH MK
C D A B O O A B D C S OAB S OCD AO * OB OC * OD
AD B C O S4S4 S1S1 S3S3 S2S2 S1S1 S2S2 AO OC S4S4 S3S3 S ABC S ACD BO OD
В С А D O S1S1 S2S2 S3S3 S4S4 S1S1 S3S3 S1S1 S2S2 S4S4 S3S3 S1S1 S4S4 S2S2 S3S3 S2S2 S4S4 BC AD 2 ;