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Mathematics 19 Online
OpenStudy (anonymous):

Help, pls? http://prntscr.com/5ikkbg

OpenStudy (anonymous):

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

Directrix (directrix):

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

Directrix (directrix):

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

OpenStudy (anonymous):

So, 540?

OpenStudy (anonymous):

@Directrix

Directrix (directrix):

That is what I got, 540 degrees.

OpenStudy (anonymous):

Thank you!

Directrix (directrix):

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.

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