Prove that in a triangle sum of any two side is greater than third side
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Give:- A triangle ABC
To prove:- AB+AC>BC
Construction:-Extend AB to D such that AD=AC
Proof :- In triangle ACD
That is AD=AC
=angle1 =angle2
To prove:- AB+AC>BC
Construction:-Extend AB to D such that AD=AC
Proof :- In triangle ACD
That is AD=AC
=angle1 =angle2
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