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dau coroanaaaaaaaaq9​

Dau Coroanaaaaaaaaq9 class=

Răspuns :

a)x=360-100=260 : 2 = 130 + 10 = 140
=> AOB= 140*
b) Daca DOB= 90*
DOC= AOB-80= 60*
BOC= 90-60= 30*

eu nu stiu nimic

(;´༎ຶٹ༎ຶ`)