Question

Help, pls?
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Answer 1

I know the lines add up to 180, but I'm not sure how to do this.

Answer 2

Do we know that lines L and M are parallel? I don't see that given and am wondering.

Answer 3

Look at the attachment.

The Straight Angle Addition Postulate states that "If the exterior sides of two (or 3 in this case) adjacent angles lie in a straight line, then the sum of the angles is 180."

So, take a look at the attached diagram and post what you think the answer is, okay?
@24/7

Answer 4

So, 540?

Answer 5

@Directrix

Answer 6

That is what I got, 540 degrees.

Answer 7

Thank you!

Answer 8

You are welcome Tip:. In these Geometry problems, the first thing to do if there is a diagram is to mark it up to give you some idea of how to begin.