Find the length of RQ

- anonymous

Find the length of RQ

- jamiebookeater

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- anonymous

|dw:1332714826151:dw|

- anonymous

|dw:1332714513106:dw|

- anonymous

You know that RC = 13 cm and CQ = 13 cm

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## More answers

- anonymous

What do I do I am lost for sure

- anonymous

I think you just have to use some trygonometry

- anonymous

its geometry.

- anonymous

You need to find RD and DQ first because RQ = RD + DQ

- anonymous

\[DQ=\sqrt{13^2-5^2}\]

- anonymous

and RD = DQ

- anonymous

So \[RQ=2\sqrt{13^2-5^2}\]

- anonymous

Thank you.

- anonymous

Thank you but I still don't know how you broke it down

- anonymous

With some reasonable asumptions. that RQ is perpendicular to CD

- anonymous

Then you get an Isosceles triangle.

- anonymous

You know the value of two sides of triangle DCQ. So you can use the phytagorean theorem.

- anonymous

What kind of geometry is that? I'm in geometry and I don't remember that

- anonymous

Well I my country is it taught as Modern Geometry.

- anonymous

in my country*

- anonymous

Oh dear... Modern geometry? I can barely handle the geometry I'm in. o.o I know the pathagroeum therom though!

- anonymous

first year geometry?

- anonymous

10th grade geometry. And first time taking it.

- anonymous

ooo where are you up to n your class?

- anonymous

Modern geometry is the study of triangles, and circles. Is not that difficult lady.

- anonymous

We're doing translations, transformations, rotations, etc. And I don't know. You either get geometry or you don't. We've learned about circles and triangles and it was hard for me to understand.

- anonymous

Well that is far more advanced than modern geometry.

- anonymous

Really?

- anonymous

Yes. Maybe you know it but you don't remember.

- anonymous

Most likely... haha do you know how many degrees are in a square?

- anonymous

Yes I know.

- anonymous

What is it?

- anonymous

360º

- anonymous

Am I wrong?

- anonymous

Oh I don't know! I didn't know that's why I asked!

- anonymous

Well you just have to remember that a squared is formed by perpendicular lines. So they form 90º on each vertex.

- anonymous

90º + 90º + 90º + 90º = 360º

- anonymous

Well then yes, you're right. Thank you for your help! :D

- anonymous

You're welcome.

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