Question

If a triangle ABC,DE is parallel to BC and D is the midpoint of side AB . find AB and BC if DE= 6 cm and EC=5 cm

Answer 1

Answer:

Here we know that, BC parallel to DE,

D is the midpoint of AB,

Therefore, AD = DB,

AE = EC = 5 cm.

Now we have to find out BC?

AD/DE = AB/BC

AD/6cm = 2AD/ BC (AD+DB=AB, given),

1/6 = 2/BC

BC= 2×6 = 12cm.

Ans:- AE =5cm , and BC=12 cm.

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Answer 2

Answer:

side AB =10 cm ;side BC =12