In triangle ABC DEF are respectively , mid point of BC CA and AB . If he length of side AB , BC and CA are 17 cm , 18 cm and 19 cm respectively find the perimeter of triangle DEF.

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Solution

Perimeter of triangle ABC=17+18+19=54
Perimeter of triangle DEF = 1/2 * Area of triangle ABC =1/2*54=27

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In triangle ABC DEF are respectively , mid point of BC CA and AB . If he length of side AB , BC and CA are 17 cm , 18 cm and 19 cm respectively find the perimeter of triangle DEF.

Perimeter of triangle ABC=17+18+19=54Perimeter of triangle DEF = 1/2 * Area of triangle ABC =1/2*54=27

Perimeter of triangle ABC=17+18+19=54
Perimeter of triangle DEF = 1/2 * Area of triangle ABC =1/2*54=27