Question

sa se afle unghiurile necunoscute din figurile urmatoare

Answer 1

a) m(AOD)=360-m(AOB) -m(BOC) -m(COD) =360 - 56-37-127=140
b) 2x+3x+x+30 =360  => 6x=330  => x=55
m(AOD) =2x=110 grade
m(DOC) =3x=165 grade
m(BOC)=x =55 grade
c) x+x+30+2x+x-15+145=360
5x=200  => x=40 grade
m(AOB) =x= 40 grade
m(BOC) =40+30 =70 grade
m(COD) =2x=80 grade
m(EOD) =x-15 =25 grade