Question

if in trangle ABC and DEF AB/DE = BC/FD then they will be similar when
a) angle B = angle F
b) angle B = angle D
c) angle A = angle D
d) angle A = angle F ​

Answer 1

Given

DE

AA =

FD

BC

Now if the angle made by both the sides of each triangle are equal to each other then triangle ΔABC and ΔDEF will become similar.

Hence ∠B should be equal to ∠D

means ∠B=∠D