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D is a point on the side BC of a triangle ABC, is AB+BC +CA >2 AD ? math question​

Answer»

that:-In a triangle SUM of two sides is always greaterthan the third side.In truangleABDAB+BD > AD…………….(1)In triangle ADCDC+CA > AD…………….(2)On adding (1) & (2)AB+BD+DC+CA > 2ADOn putting BD+DC=BCAB+BC+CA > 2AD . Proved



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