#### Answer

1:126°
2:54°
3:126°
4:126°
5:54°
6:54°
7:126°

#### Work Step by Step

1 and 54° are Supplementary angles,
Thus 1 = 180°-54°= 126°
1:126°
2 and 54° are vertical angles and thus are equal.
2: 54°
1 and 3 are vertical angles and thus are equal.
3: 126°
3 and 4 are alternate interior angles and thus are equal.
4: 126°
2 and 5 are alternate interior angles and thus are equal.
2: 54°
Thus 5: 54°
5 and 6 are vertical angles and thus are equal.
6: 54°
4 and 7 are vertical angles and thus are equal.
4: 126°
Thus 7: 126°