Question

Lines A and B are parallel m 7=

Answer 1

`52^0{`

Explanation:

m∠4 and m∠8 are corresponding angles.

So, m∠4 = 128° = m∠8

Now, m∠7+m∠8=180° (linear pair)

m<7=52 o

Answer 2

∠3 = 55° {being vertically opposite angles}

∠7 = ∠3 = 55° {being corresponding angles}