Mathematics

The sum of two acute angles can be:


ANSWER

All of the above


SOLUTION
Let one angle is $$\displaystyle { 30 }^{ o }$$ and the other angle is $$\displaystyle { 40 }^{ o }$$ then sum $$\displaystyle { 70 }^{ o }$$. which is an acute angle.
Let one angle be $$\displaystyle { 70 }^{ o }$$ and other angle is $$\displaystyle { 80 }^{ o }$$, then sum is $$\displaystyle { 150 }^{ o }$$ which is obtuse angle.
Let one angle is $$\displaystyle { 45 }^{ o }$$ and another angle is $$\displaystyle { 45 }^{ o }$$ then sum is $$\displaystyle { 90 }^{ o }$$ which is right angle.
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