Question

In a triangle ABC,D and E are midpoints of sides AB and AC respectively . If DE=4cm ,then BC =?​

Answer 1

Answer:

We have, D and E as the midpoints of AB and AC respectively. But we have given DE as 4cm. Therefore BC will the double of DE. = 8cm

Step-by-step explanation:

Answer 2

Step-by-step explanation:

∆ ADE ~ ∆ ABC (A-A-A)

So, AE/AC = AD/AB = DE/BC

AE/2AE = AD/2AD = 4/BC

1/2 = 4/BC

=> BC = 8