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anonymous

  • one year ago

Given: Line AD diameter of Circle P. If m Angle 1 = 40°, then m Arch AB = a) 20 b) 40 c) 80

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  1. anonymous
    • one year ago
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    https://suwannee.owschools.com/media/g_geo_2013/7/group181.gif

  2. anonymous
    • one year ago
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    The answer I put last time was 80

  3. ybarrap
    • one year ago
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    The Arch AB is spanned by the same angle as Angle 1, so they should be the same

  4. anonymous
    • one year ago
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    I thought that an angle is half the measure of the intercepted arch. So it's different for this?

  5. ybarrap
    • one year ago
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    You are thinking about the inscribed angle theorem |dw:1435588031154:dw|

  6. ybarrap
    • one year ago
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    https://www.mathsisfun.com/geometry/circle-theorems.html

  7. anonymous
    • one year ago
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    Oh yeah. I've just been doing so much of that lately that I'm unknowingly applying it to everything. Lol

  8. anonymous
    • one year ago
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    Thanks for the link btw

  9. ybarrap
    • one year ago
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    Sometimes just need to take a breather and just enjoy the learning and don't worry so much about getting it right all the time. :-)

  10. ybarrap
    • one year ago
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    You're welcome

  11. anonymous
    • one year ago
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    Thanks

  12. anonymous
    • one year ago
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    So the answer is 40?

  13. ybarrap
    • one year ago
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    Yes

  14. anonymous
    • one year ago
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    Thanks. You're a big help

  15. ybarrap
    • one year ago
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    BTW, earlier I wrote "Interior" Angle Theorem, I meant "Inscribed" Angle Theorem

  16. anonymous
    • one year ago
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    Oh. Lol

  17. anonymous
    • one year ago
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    I didn't even notice

  18. ybarrap
    • one year ago
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    Because I'm sure you knew what I meant -- good example of learning versus getting it right all the time.

  19. anonymous
    • one year ago
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    Yeah. Totally true

  20. anonymous
    • one year ago
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    Oh and I have another one. Could you help me with that to?

  21. anonymous
    • one year ago
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    Never mind

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