An exterior angle of a triangle is of measure 70 degree and one of its interior opposite angles is of measure 25 degree . Find the measure of the other interior opposite angle

Dear student,

ACD=ABC+BAC            --[exterior angle is equal to sum of interior opposite angles]70°=25°+BACBAC=70°-25°BAC=45°Thus, other interior  angle is 45°.
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25 degrees
 
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