Fill in Inc blanks so as to make the following statements true:
(i) If one angle of a linear pair is acute then its other angle will be______
(ii) A ray stands on a line, then the sum of the two adjacent angles so formed is ______
(iii) If the sum of two adjacent angles is 180, then the ______ arms of the two angles are opposite rays.
(i) Obtuse angle
(ii) 180 degrees