Question

how to solve this please it's urgent​

Answer 1

Answer:

Let ∠A<∠B+∠C. Then,

2∠A<∠A+∠B+∠C⇒2∠A<180∘  

⇒∠A<90∘  

 

Similarly, we obtain ∠B<90∘  

 and ∠C<90∘  

 

=> Each angle of the triangle is less than 90° and hence it is an acute-angled triangle.

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Answer 2

Answer:

it is a acute angle triangle

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