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Mathematics 9 Online
OpenStudy (anonymous):

geometry help ?

OpenStudy (smokeysthename):

what do you need help with?

OpenStudy (anonymous):

OpenStudy (anonymous):

@SmokeysTheName ^^

OpenStudy (smokeysthename):

I am not too familiar with that kind of work, I'm sorry but I'm gonna have to let someone else take over from there!

OpenStudy (smokeysthename):

im pretty sure you have to set them equal to each other but honestly I have no clue, and I don't wanna give you wrong directions.

OpenStudy (smokeysthename):

@agent0smith can help :D

OpenStudy (anonymous):

@agent0smith help me ! lol

OpenStudy (anonymous):

180-(6x+11)=180-(7x-8) as straight line has angle of 180' so 6x+11=7x-8 19'=x

OpenStudy (anonymous):

@sarahusher , can you help me with another ?

OpenStudy (e.mccormick):

As they are opposite angles, you can set them equal without the 180- part.

OpenStudy (agent0smith):

The angles are equal, set them equal, @SmokeysTheName was correct. @sarahusher just set them equal to each other, with an unnecessary 180 on both sides! :P

OpenStudy (e.mccormick):

Where the 180 comes in is if they are next to each other, supplementary. Then it is \(f(x)^\circ+g(x)^\circ=180^\circ\)

OpenStudy (anonymous):

how would i solve this ? @e.mccormick , @agent0smith ?

Directrix (directrix):

@lanana Angles One and Three are called vertical angles (or opposite angles in some books). Theorem: Vertical angles are congruent. Congruent angles have the same measure. So, with that information, what is the answer to the question?

OpenStudy (agent0smith):

^that. Angles 2 and 4 are equal. Angles 1 and 3 are equal.

OpenStudy (anonymous):

i don't understand how that would help me solve the question ? @Directrix

Directrix (directrix):

Look at the diagram. The two angles marked have the same measure.

OpenStudy (anonymous):

Yea , i understand that i don't understand what to do next ? lol @Directrix

Directrix (directrix):

What is the measure of angle 3?

OpenStudy (agent0smith):

If you know the size of angle 3, and you know angle 1 is equal... then what's angle 3? Angle 3 is 37. It is equal to angle 1. Angle 1 must be...

OpenStudy (anonymous):

37 ? lol

OpenStudy (agent0smith):

Yes! :P

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