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Renee99 Group Title

The figure below shows triangle PQR with a circumscribed circle of radius 7 inches. http://assets.openstudy.com/updates/attachments/505b3fd4e4b0cc122893ea30-renee99-1348157619927-456845882011121142pm1902385864.png Which segment must measure 7 inches? A. segment RO B. segment RQ C. the angle bisectors D. the perpendicular bisectors

  • 2 years ago
  • 2 years ago

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  1. Renee99 Group Title
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    there's also this one: Look at triangle PQR. http://assets.openstudy.com/updates/attachments/505b3fd4e4b0cc122893ea30-renee99-1348157849369-456845882011122801pm596145625.png Segment QX is an angle bisector. Which statement must be true? A. length of segment XP = 6 inches B. length of segment XQ = 4 inches C. measure of angle XQR = measure of angle XQP = 35˚ D. measure of angle QRX = 180˚ – (90˚+ 35˚) = 180˚ – (125˚) = 55˚ I think the answer is A, is that right?

    • 2 years ago
  2. Renee99 Group Title
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    I don't know the first one, but I think the second one is A

    • 2 years ago
  3. abdul_shabeer Group Title
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    Segment QX is an angle bisector. What do you understand by this?

    • 2 years ago
  4. Renee99 Group Title
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    i cut the triangle in half

    • 2 years ago
  5. Renee99 Group Title
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    it*

    • 2 years ago
  6. abdul_shabeer Group Title
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    It divides the angle into two

    • 2 years ago
  7. Renee99 Group Title
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    and half of 12 is 6 so that's where I get my answer...

    • 2 years ago
  8. abdul_shabeer Group Title
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    It does not divide the side, it only divides the angle.

    • 2 years ago
  9. Renee99 Group Title
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    ohh okay.

    • 2 years ago
  10. abdul_shabeer Group Title
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    In case of an isosceles triangle, it divides the opposite side also.

    • 2 years ago
  11. Renee99 Group Title
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    well, I know its not C nor B

    • 2 years ago
  12. abdul_shabeer Group Title
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    Why not C?

    • 2 years ago
  13. Renee99 Group Title
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    because the measure of angle XQR is 70 not 35 right

    • 2 years ago
  14. Renee99 Group Title
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    wait, looking at the wrong problem...

    • 2 years ago
  15. Renee99 Group Title
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    hold on im mixed up, was looking at the other problems pic... lol

    • 2 years ago
  16. Renee99 Group Title
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    but yeah, the angle is 70 and not 35 isnt it?

    • 2 years ago
  17. abdul_shabeer Group Title
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    Angle PQR is 70

    • 2 years ago
  18. Renee99 Group Title
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    ohhh, okay, then that would make C the answer

    • 2 years ago
  19. abdul_shabeer Group Title
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    Right

    • 2 years ago
  20. Renee99 Group Title
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    because half of 70 is 35! okay thanks so much! could u maybe help me with the first one now?

    • 2 years ago
  21. abdul_shabeer Group Title
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    Which length is the radius for first question?

    • 2 years ago
  22. Renee99 Group Title
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    well, its says a circumscribed circle of radius 7 inches, which kind of confuses me, but I always thought the radius was the doted line?

    • 2 years ago
  23. abdul_shabeer Group Title
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    Dotted line is the radius

    • 2 years ago
  24. Renee99 Group Title
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    okay, so now how do we find the measure that equals 7 inches?

    • 2 years ago
  25. abdul_shabeer Group Title
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    Why did you think the dotted line is the radius?

    • 2 years ago
  26. Renee99 Group Title
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    Idk, I think its a subconscious thing, I just remember that the dotted line should be the radius?

    • 2 years ago
  27. Renee99 Group Title
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    I remember learning that about radius in school

    • 2 years ago
  28. abdul_shabeer Group Title
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    If you want to conclude that OR is radius, then you must prove that O is the centre of the circle.

    • 2 years ago
  29. abdul_shabeer Group Title
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    here's where circumcentre comes into play

    • 2 years ago
  30. Renee99 Group Title
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    okay... so then would that mean that the answer is A, since we're saying it's the radius?

    • 2 years ago
  31. abdul_shabeer Group Title
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    Answer is right, but you cannot just conclude that OR is radius. The main question is that you need to prove that OR is radius

    • 2 years ago
  32. Renee99 Group Title
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    okay, isn't there a formula for that, I don't have my formula sheet with me, but if I remember correctly, isn't something like 3.14(R)^2

    • 2 years ago
  33. Renee99 Group Title
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    I cant remember the exact formula

    • 2 years ago
  34. abdul_shabeer Group Title
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    No need of any formula

    • 2 years ago
  35. abdul_shabeer Group Title
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    Do you know what does circumcentre mean?

    • 2 years ago
  36. Renee99 Group Title
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    where the three perpendicular bisectors meet?

    • 2 years ago
  37. abdul_shabeer Group Title
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    And it's also the centre of circle

    • 2 years ago
  38. abdul_shabeer Group Title
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    In the picture, two pependicular bisectors meet, which means the third perpendicular bisector would also meet at the same point.

    • 2 years ago
  39. abdul_shabeer Group Title
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    by this you can conclude that O is the centre of circle.

    • 2 years ago
  40. abdul_shabeer Group Title
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    And OR is the radius

    • 2 years ago
  41. Renee99 Group Title
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    gotcha, thanks for ur help! I really really appreciate it!

    • 2 years ago
  42. abdul_shabeer Group Title
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    No problem

    • 2 years ago
  43. abdul_shabeer Group Title
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    Are you good at chemistry?

    • 2 years ago
  44. Renee99 Group Title
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    somewhat, im taking chemistry this year...

    • 2 years ago
  45. Renee99 Group Title
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    I know the basic;s of chemistry pretty well

    • 2 years ago
  46. Renee99 Group Title
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    basic's*

    • 2 years ago
  47. abdul_shabeer Group Title
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    What is hardwater?

    • 2 years ago
  48. Renee99 Group Title
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    I believe hard water is water that has high mineral content...

    • 2 years ago
  49. Renee99 Group Title
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    or something like that, not sure, look it up?

    • 2 years ago
  50. abdul_shabeer Group Title
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    Ok, thanks

    • 2 years ago
  51. Renee99 Group Title
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    np :)

    • 2 years ago
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