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Calculati masurile complementelor unghiurilor cu masura de : 72grade,13grade,50grade40grade40'. va rog frumos !!!!

Răspuns :

COMPLEMENTE=SUMA LOR=90 GRADE
COM.72 GR=90-72=18 GR
13 GR=90-13=77 GR
COM.50GR40''40'=90-5O GR40''40'=38GR 12''20'