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Mathematics 13 Online
OpenStudy (anonymous):

Help meeee! (totally stressing!) In the diagram, lines m and n are parallel. If m <2 = 150 degrees, find the measure to the following angles (posting attachment below.) @johnweldon1993

OpenStudy (anonymous):

OpenStudy (anonymous):

<4 = ? <6 = ? <8 = ? <7 = ?

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

do you have anything so far?

OpenStudy (anonymous):

No, I don't know what to do. :/

jimthompson5910 (jim_thompson5910):

do you see how angle 2 and angle 8 are vertical angles?

OpenStudy (anonymous):

Yes I think so?

jimthompson5910 (jim_thompson5910):

what is one property of vertical angles

OpenStudy (anonymous):

That they opposite each other?

jimthompson5910 (jim_thompson5910):

and what else

OpenStudy (anonymous):

Ah..they have equal measures..?

jimthompson5910 (jim_thompson5910):

correct

OpenStudy (anonymous):

So..how can I use that in what I'm trying to solve?

jimthompson5910 (jim_thompson5910):

well that means angle 2 and angle 8 are equal

OpenStudy (anonymous):

How do I know what they are though, then I'll know the other one too..

jimthompson5910 (jim_thompson5910):

they give you the measure of angle 2

jimthompson5910 (jim_thompson5910):

at the top

OpenStudy (anonymous):

Oh.. well how did they get that? I still have 3 angles to solve?

jimthompson5910 (jim_thompson5910):

it's just given (assumed to be true)

OpenStudy (anonymous):

...So how do I know what angle 4 and 7 are?

jimthompson5910 (jim_thompson5910):

angle 2 and angle 4 are corresponding angles

jimthompson5910 (jim_thompson5910):

since m || n, we know that angle 2 = angle 4

jimthompson5910 (jim_thompson5910):

angle 4 = angle 6 because the two are vertical angles

OpenStudy (anonymous):

So they're all like 150?

jimthompson5910 (jim_thompson5910):

angle 2, angle 8, angle 4, angle 6 yep all 150

jimthompson5910 (jim_thompson5910):

how about angle 7?

OpenStudy (anonymous):

I have no clue @jim_thompson5910

jimthompson5910 (jim_thompson5910):

angle 7 and 8 add to 180 degrees

jimthompson5910 (jim_thompson5910):

angle 7 + angle 8 = 180 150 + x = 180 x = ??

OpenStudy (anonymous):

30

jimthompson5910 (jim_thompson5910):

so that is angle 7

OpenStudy (anonymous):

Thank you! Could you help me with one more thing? It won't take as long I promise.

jimthompson5910 (jim_thompson5910):

alright, go ahead

OpenStudy (anonymous):

Hey I actually figured it out on my own! (yay!) thanks though!

jimthompson5910 (jim_thompson5910):

you're welcome

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