Q1 of 95 Page 15

In a ΔABC, D, E and F are, respectively, the mid points of BC, CA and AB. If the lengths of side AB, BC and CA are 7 cm, 8 cm and 9 cm, respectively, find the perimeter of ΔDEF.

Given,


In ΔABC


D, E, F are the mid points of BC, CA and AB


AB = 7cm


BC = 8cm


CA = 9cm


We need to find out the perimeter of DEF



So,





So, perimeter of DEF


DE+EF+DF = 4+3.5+4.5 = 12cm


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