Question

Why triangle abc is similar to def

Answer 1

∆ABC is similar to ∆DEF if:
(1)Corresponding angles are equal.
Eg: If:
Angle A = Angle D
Angle B = Angle E
Angle C = Angle F

(2)Corresponding sides are in the same ratio.
Eg: If:
AB/DE = BC/EF = AC/DF