Parallel

Not Parallel

supplementary angles.

obtuse angles.

complementary angles

a straight line.

146° - supplementary angles.

34° - alternating exterior angles.

146° - same-side interior angles.

34° - supplementary angles.

77° - alternating exterior angles.

103° - alternating interior angles.

77° - vertical angles.

103° - vertical angles.

 $\angle7\ and\ \angle8$ 

 $\angle2\ and\ \angle3$ 

 $\angle1\ and\ \angle7$ 

 $\angle6\ and\ \angle4$ 

 $115\degree$ 

 $65\degree$ 

 $180\degree$ 

Cannot be determined

$\angle8\ \ and\ \angle7$

$\angle8\ and\ \angle6$

$\angle8\ and\ \angle5$

 $\angle1$ 

 $\angle5$ 

 $\angle3$ 

 $\angle6$ 

 $\angle9$