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CBSE Class 9 Answered

O is any point in the interior of a triangle ABC then AB + AC is _________.    

Asked by gpnkumar0 | 05 Aug, 2016, 06:24: PM
answered-by-expert Expert Answer
begin mathsize 20px style Construction colon space Produce space BO space to space meet space AC space at space straight D. Proof colon space In space increment ABD comma space AB plus AD greater than BD rightwards double arrow AB plus AD greater than BO plus OD..... left parenthesis straight i right parenthesis In space increment OCD comma CD plus DO greater than OC...... left parenthesis ii right parenthesis left square bracket Sum space of space any space two space sides space must space be space greater space than space the space third space side. right square bracket Adding space questions space left parenthesis straight i right parenthesis space and space left parenthesis ii right parenthesis comma space we space get AB plus AD plus CD plus DO greater than BO plus OD plus OC rightwards double arrow AB plus AC plus DO greater than BO plus OD plus OC rightwards double arrow AB plus AC greater than BO plus OC end style
Answered by Rebecca Fernandes | 07 Aug, 2016, 10:19: AM

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