MCQ
If $\text{ABC}$ and $\text{DEF}$ are two triangles and $\frac{\text{AB}}{\text{DE}}=\frac{\text{BC}}{\text{FD}},$ then the two triangles are similar if :
  • A
    $\angle\text{A}=\angle\text{F}$
  • $\angle\text{B}=\angle\text{D}$
  • C
    $\angle\text{A}=\angle\text{D}$
  • D
    $\angle\text{B}=\angle\text{E}$

Answer

Correct option: B.
$\angle\text{B}=\angle\text{D}$
If $\text{ABC}$ and $\text{DEF}$ are two triangles and $\frac{\text{AB}}{\text{DE}}=\frac{\text{BC}}{\text{FD}},$
then the two triangles are similar if $\angle\text{B}=\angle\text{D}$

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