Question

A
4. In the given ∆ABC, D, E, F are the midpoints of BC, CA
and AB respectively. P, Q and R are the midpoints of
EF, FD and DE respectively. If AB - 4.8 cm, BC = 7.2 cm
and CA = 6.8 cm, find the sides of the ∆PQR​

Answer 1

Using midpoint theorem,
The line segment joining the midpoints of the side of triangle is equals to half of the third side.
Therefore, DE = 1/2AB = 1/2 x 4.8 = 2.4 cm
Also, FE = 1/2BC = 1/2 x 7.2 = 3.6 cm
Also, DF = 1/2AC = 1/2 x 6.8 = 3.4 cm

Now for triangle PQR
PQ = 1/2EF = 1/2 x 3.6 = 1.8 cm
QR = 1/2DE = 1/2 x 2.4 = 1.2 cm
PR = 1/2DF = 1/2 x 3.4 = 1.7 cm

Answer 2

Answer:

this is correct...................