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Standard IX

Mathematics

Line from Vertex Divides the Length of Opposite Side and Area

In Δ ABC , D ...

Question

In ∆ABC, D, E and F are respectively 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, the perimeter of ∆DEF will be

19 cm

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15 cm

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20 cm

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12 cm

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Solution

The correct option is D
12 cm

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In ∆ABC, D, E and F are respectively 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, the perimeter of ∆DEF will be

The correct option is D 12 cm

The correct option is D
12 cm