Mathematics

Can two angles be supplementary if both of them are: (i) acute (ii) obtuse (iii) right? 


SOLUTION
(i) No, because sum of two acute angles is less than $$180^o$$. 
(ii) No, because sum of two obtuse angles is more than $$180^o$$,
(iii) Yes, because sum of two right angles is $$180^o$$.
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