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DanielWhoseley

  • 2 years ago

in triangle ABC, m<A=60 and m<B=40. which side of triangle ABC IS THE longest?

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  1. lesliemolina
    • 2 years ago
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    m<a

  2. DanielWhoseley
    • 2 years ago
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    yes

  3. calculusxy
    • 2 years ago
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    To find this answer out you want to find the opposite side of the longest angle. That's the "formula".

  4. DanielWhoseley
    • 2 years ago
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    ok

  5. calculusxy
    • 2 years ago
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    Now do you understand on how to figure this out?

  6. lesliemolina
    • 2 years ago
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    its just m<A=60 trust me im in college i learned this in 9th grade im a reslly smar6 student

  7. DanielWhoseley
    • 2 years ago
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    ok

  8. ranga
    • 2 years ago
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    Find the third angle first. Whichever angle is the biggest the side opposite to that will be the longest.

  9. ranga
    • 2 years ago
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    m<A=60 and m<B=40. Therefore m<C = 180 - 60 - 40 = 80 m<C is the biggest angle. Therefore, the side opposite m<C will be the longest. The side opposite m<C is usually denoted by c. So c is the longest side of the triangle.

  10. DanielWhoseley
    • 2 years ago
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    angle A and C is the longest side

  11. ranga
    • 2 years ago
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    Angle C = 80 > Angle A = 60 > Angle B = 40 Therefore, side c > side a > side b

  12. DanielWhoseley
    • 2 years ago
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    ok thank

  13. ranga
    • 2 years ago
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    you are welcome.

  14. DanielWhoseley
    • 2 years ago
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    two sides of an isosceles triangle measure 3 and 7. which of the following could be the measure of the third side?

  15. nikato
    • 2 years ago
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    so u know an isoscels trianlge must ahve 2 sides that are congrunet. since u have a side that is 3 and another 7. the 3rd side must be either 3 or7

  16. DanielWhoseley
    • 2 years ago
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    yea

  17. nikato
    • 2 years ago
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    yea, thats it

  18. DanielWhoseley
    • 2 years ago
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    the answer is [1] 9 [2] 7 [3] 5 [4] 3

  19. nikato
    • 2 years ago
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    well, it could be either 2 or 4 with all the info u were given

  20. DanielWhoseley
    • 2 years ago
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    ok thanks

  21. DanielWhoseley
    • 2 years ago
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    in triangle ABC, m<=48, and m<c=24. what type of triangle is triangle ABC?

  22. nikato
    • 2 years ago
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    |dw:1388369988615:dw|can u find <B if the total of a triangle is 180

  23. DanielWhoseley
    • 2 years ago
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    ADD 48 AND 24 AND IT GIVE YOU 72

  24. DanielWhoseley
    • 2 years ago
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    IS IT RIGHT

  25. nikato
    • 2 years ago
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    yes, then subtract that from 180. then tell me if that is obtuse or actue

  26. DanielWhoseley
    • 2 years ago
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    obtuse

  27. nikato
    • 2 years ago
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    correct, taht measn triangle ABC is obtuse

  28. DanielWhoseley
    • 2 years ago
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    in the accompanying diagram, BA=BC and m\[\forall <x =117\]

  29. nikato
    • 2 years ago
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    waht diagram

  30. DanielWhoseley
    • 2 years ago
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    |dw:1388374843523:dw|

  31. nikato
    • 2 years ago
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    |dw:1388375062951:dw|so this is what you have. what are u solving for?

  32. DanielWhoseley
    • 2 years ago
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    for Y

  33. nikato
    • 2 years ago
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    |dw:1388375208766:dw|can u solve for that angle if a line=180

  34. DanielWhoseley
    • 2 years ago
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    180-117=63

  35. nikato
    • 2 years ago
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    |dw:1388375443532:dw| y=63 becuz the base angles of an isoscles trinagle are congruent and by vertical angle thoerem thsoe 2 angles are also congruent

  36. DanielWhoseley
    • 2 years ago
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    thank you

  37. nikato
    • 2 years ago
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    your welcome

  38. DanielWhoseley
    • 2 years ago
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    in triangle ABC, <A is obtuse. which statement is true about the sum of the measure of < B and <C

  39. nikato
    • 2 years ago
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    they must be less than 90

  40. DanielWhoseley
    • 2 years ago
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    thanks

  41. DanielWhoseley
    • 2 years ago
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    given: AB=DE and < A=<D. which of the following methods can be used to prove that angle ABC=DEC?|dw:1388376416947:dw|

  42. nikato
    • 2 years ago
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    |dw:1388376739438:dw|so this is whats given. and can u show me ur choices

  43. DanielWhoseley
    • 2 years ago
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    [1] SAS [2] ASA [3] SSS [4] there is insufficient information to Determine if the triangles are congruent

  44. nikato
    • 2 years ago
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    if this is allt eh info even, then i think is 4

  45. DanielWhoseley
    • 2 years ago
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    at a certain time of the day the shadow of a 5' boy is 8' long. the shadow of a nearby flagpole at this same time is 28 long. how tall is the flagpole?

  46. nikato
    • 2 years ago
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    set up a propertion and solve

  47. nikato
    • 2 years ago
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    |dw:1388377765971:dw|

  48. DanielWhoseley
    • 2 years ago
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    I got 17.5

  49. nikato
    • 2 years ago
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    ok, then that should be the height of the actual flagpole

  50. DanielWhoseley
    • 2 years ago
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    thank

  51. DanielWhoseley
    • 2 years ago
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    Given: AD is congruent to CD, AB=CB prove: angle ABD=angle CBD|dw:1389560316762:dw|

  52. nikato
    • 2 years ago
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    Use SSS becuz BD=BD by reflexive

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