A: 70° (angles on a straight line equal to 180°)
B: 60° ( vertically opposite angles are equal)
C: 70° ( vertically opposite angles are equal)
D: 50° (vertically opposite angles are equal)
E: 130° ( angles on a straight line equal to 180°)
F: 50° ( vertically opposite angles are equal)
G: 60° (vertically opposite angles are equal)
H: 120° (angles on a straight line equal to 180°)
I: 130° (vertically opposite angles are equal)
J: 120° (vertically opposite angles are equal)