Answer
1)
2)
3)
4)
5)
6)
Explanation
From the diagram,
, corresponding angles are equal.
From the diagram, m=k, corresponding angles are equal.
But k+130=180, angles on a straight line sum up to 180 degrees.
This implies that k=180-130=50
From the diagram ; ,angles on a straight line sum up to 180 degrees.
From the diagram, vertically opposite angles are equal.
From the triangular portion;
i+h+m=180. sum of interior angles of a triangle.
This implies that:
i+79+50=180
i+129=180
i=180-129
Finally
, vertically opposite angles are equal.