HELP! PIc below! will give medals!:)
AD is a diameter of circle F.
Find: m arc BC, m arc CD, m arc AD, m arc AB, m arc AC, and m arc AEC

- anonymous

- katieb

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- anonymous

@terenzreignz do u think u can help me out here

- terenzreignz

Were you given any specific measurements?

- anonymous

|dw:1365467974949:dw|

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## More answers

- terenzreignz

No radius or anything? Just angle measures?

- terenzreignz

Okay, we'll work in degree measure, then, you ready?

- anonymous

nothing just what I gave you I swath I got

- anonymous

oksounds good

- terenzreignz

What's the measure of an entire straight line (as an angle)?|dw:1365461067059:dw|

- anonymous

180

- terenzreignz

Yes, so the total measure of this|dw:1365461181475:dw|
is also 180 degrees right?

- anonymous

yes

- terenzreignz

So, you have your given angle, 45 degrees... and this one, marked out to be a right angle (90 degrees) What's left?|dw:1365461384066:dw|
Remember, they all have to add up to 180.

- anonymous

50

- terenzreignz

Why 50?

- terenzreignz

Check it... what's 50 + 90 + 45 ?

- anonymous

oh so that pat is 40

- anonymous

I mean 45

- terenzreignz

45. Yes.

- terenzreignz

|dw:1365461970113:dw|

- anonymous

soAB=45

- terenzreignz

Yes.

- terenzreignz

so is mCD, if you didn't notice...

- anonymous

oh ya lol

- terenzreignz

Now, mAD, is just from A to D, what's one half of the circle...

- anonymous

180

- terenzreignz

|dw:1365462096220:dw|

- terenzreignz

Yeah, that's it :)

- terenzreignz

What about mBC ?

- anonymous

90

- terenzreignz

yes... Now what about AC ?
Be careful, it probably means this... I'll tell you why later, but what does this measure|dw:1365462245737:dw|

- anonymous

135

- terenzreignz

Very good. Now, we took that path, because the other way for A to get into C, is the one passing through E
So what's mAEC ?

- terenzreignz

|dw:1365462330918:dw|

- anonymous

225

- anonymous

opps didtjhat the wrong way

- terenzreignz

See? It looks like you've gotten the hang of it :)

- terenzreignz

Nah, 225 = 180 + 45 is correct.

- anonymous

is it 135

- terenzreignz

No, the other way was 135|dw:1365462477173:dw|

- terenzreignz

What are we talking about here?

- anonymous

i ment 90

- terenzreignz

Yeah, which arc are we talking about here?

- anonymous

os sorry I was only doing A to E

- terenzreignz

That's not being asked, and there is no way to get AE

- anonymous

idk their asking for arc AEC

- anonymous

im getting confused I don't no how to get arc AEB

- terenzreignz

AEC is just the arc from A to C, passing through E.

- anonymous

so whould it be 222

- terenzreignz

No... It's from D to C, plus the arc from A to D.

- anonymous

so 180+45

- anonymous

=225

- terenzreignz

Yes.

- anonymous

Finally lol thank you for your help

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