MCQ
In Figure. if $AB | | CD$, then:
  • A
    $\angle2=\angle3$
  • B
    $\angle1=\angle4$
  • C
    $\angle4=\angle1+\angle2$
  • $\angle1+\angle2=\angle3+\angle4$

Answer

Correct option: D.
$\angle1+\angle2=\angle3+\angle4$

Given, $AB | | CD$ and $AC$ is the transversal.
So, $\angle1=\angle3$
Also, in $\triangle\text{ABC},$ $\angle3+\angle4=\angle1+\angle2$
$[\because$ exterior angle = sum of two opposite interior angles$]$

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