Question

Given that lines a and b are parallel and that m∠4 = 128°, find m∠7.

A) 32°
 B) 42°
 C) 52°
 D) 62°

Answer 1

try (c 52) i just did the test and got an 83 it did show show the answer but ik what i put down hope this helps

Answer 2

Answer: Option 'c' is correct.

Explanation:

Since we have given that

line a and line b are two parallel lines.

and there is a transversal.

Since m∠4 = 128°

And m∠4 and m∠8 are corresponding angles.

So, m∠4 = 128° = m∠8

Now, m∠7+m∠8=180° (linear pair)

`m\angle 7+128^\circ=180^\circ\\\\m\angle 7=180^\circ-128^\circ\\\\m\angle 7=52^\circ`

Hence, Option 'c' is correct.