Question

What is linear pair angles and alternate angles?

Answer 1

$\angle 4=\angle 6$ (interior alternate angle)
$\angle 3=\angle 5$ (interior alternate angle)
$\angle 1=\angle 7$ (exterior alternate angle)
$\angle 2=\angle 8$ (exterior alternate angle)
Now, $\angle 1=\angle 2$ (linear pairs)
$\angle 1=\angle 4$ (linear pairs)
$\angle 3=\angle 4$ (linear pairs)