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heather040200

  • 3 years ago

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

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  1. heather040200
    • 3 years ago
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    @terenzreignz do u think u can help me out here

  2. terenzreignz
    • 3 years ago
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    Were you given any specific measurements?

  3. heather040200
    • 3 years ago
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    |dw:1365467974949:dw|

  4. terenzreignz
    • 3 years ago
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    No radius or anything? Just angle measures?

  5. terenzreignz
    • 3 years ago
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    Okay, we'll work in degree measure, then, you ready?

  6. heather040200
    • 3 years ago
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    nothing just what I gave you I swath I got

  7. heather040200
    • 3 years ago
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    oksounds good

  8. terenzreignz
    • 3 years ago
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    What's the measure of an entire straight line (as an angle)?|dw:1365461067059:dw|

  9. heather040200
    • 3 years ago
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    180

  10. terenzreignz
    • 3 years ago
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    Yes, so the total measure of this|dw:1365461181475:dw| is also 180 degrees right?

  11. heather040200
    • 3 years ago
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    yes

  12. terenzreignz
    • 3 years ago
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    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.

  13. heather040200
    • 3 years ago
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    50

  14. terenzreignz
    • 3 years ago
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    Why 50?

  15. terenzreignz
    • 3 years ago
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    Check it... what's 50 + 90 + 45 ?

  16. heather040200
    • 3 years ago
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    oh so that pat is 40

  17. heather040200
    • 3 years ago
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    I mean 45

  18. terenzreignz
    • 3 years ago
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    45. Yes.

  19. terenzreignz
    • 3 years ago
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    |dw:1365461970113:dw|

  20. heather040200
    • 3 years ago
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    soAB=45

  21. terenzreignz
    • 3 years ago
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    Yes.

  22. terenzreignz
    • 3 years ago
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    so is mCD, if you didn't notice...

  23. heather040200
    • 3 years ago
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    oh ya lol

  24. terenzreignz
    • 3 years ago
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    Now, mAD, is just from A to D, what's one half of the circle...

  25. heather040200
    • 3 years ago
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    180

  26. terenzreignz
    • 3 years ago
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    |dw:1365462096220:dw|

  27. terenzreignz
    • 3 years ago
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    Yeah, that's it :)

  28. terenzreignz
    • 3 years ago
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    What about mBC ?

  29. heather040200
    • 3 years ago
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    90

  30. terenzreignz
    • 3 years ago
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    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|

  31. heather040200
    • 3 years ago
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    135

  32. terenzreignz
    • 3 years ago
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    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 ?

  33. terenzreignz
    • 3 years ago
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    |dw:1365462330918:dw|

  34. heather040200
    • 3 years ago
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    225

  35. heather040200
    • 3 years ago
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    opps didtjhat the wrong way

  36. terenzreignz
    • 3 years ago
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    See? It looks like you've gotten the hang of it :)

  37. terenzreignz
    • 3 years ago
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    Nah, 225 = 180 + 45 is correct.

  38. heather040200
    • 3 years ago
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    is it 135

  39. terenzreignz
    • 3 years ago
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    No, the other way was 135|dw:1365462477173:dw|

  40. terenzreignz
    • 3 years ago
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    What are we talking about here?

  41. heather040200
    • 3 years ago
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    i ment 90

  42. terenzreignz
    • 3 years ago
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    Yeah, which arc are we talking about here?

  43. heather040200
    • 3 years ago
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    os sorry I was only doing A to E

  44. terenzreignz
    • 3 years ago
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    That's not being asked, and there is no way to get AE

  45. heather040200
    • 3 years ago
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    idk their asking for arc AEC

  46. heather040200
    • 3 years ago
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    im getting confused I don't no how to get arc AEB

  47. terenzreignz
    • 3 years ago
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    AEC is just the arc from A to C, passing through E.

  48. heather040200
    • 3 years ago
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    so whould it be 222

  49. terenzreignz
    • 3 years ago
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    No... It's from D to C, plus the arc from A to D.

  50. heather040200
    • 3 years ago
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    so 180+45

  51. heather040200
    • 3 years ago
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    =225

  52. terenzreignz
    • 3 years ago
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    Yes.

  53. heather040200
    • 3 years ago
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    Finally lol thank you for your help

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