Question
A triangle can have at most one obtuse angles.

Answer

According to the angle sum property of the triangle In $\triangle\text{ABC}$ $\angle\text{A}+\angle\text{B}+\angle\text{C}=180^\circ$ Now, if a triangle will have more than one obtuse angle Then, $\angle\text{A}+\angle\text{B}+\angle\text{C}>180^\circ$

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