Răspuns:
a) puncte coliniare
b) suplementul: 180°-75°=105°
c)12°35'+27°25'=39°60'=40° (60 '=1°)
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Răspuns:
a) puncte coliniare
b) suplementul: 180°-75°=105°
c)12°35'+27°25'=39°60'=40° (60 '=1°)