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KatherinePierce1864

  • 2 years ago

1. Which angle is congruent to 1? (1 point) <2<- <5 <6 <7 2. Which can be used to directly prove that <1 <8? (1 point) Alternate Interior Angles Theorem Corresponding Angles Postulate Same-Side Interior Angles Theorem Alternate Exterior Angles Theorem 3. If m<5 = 42o, what is m<4? (1 point) 42o<- 48o 128o 138o

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  1. KatherinePierce1864
    • 2 years ago
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  2. ParthKohli
    • 2 years ago
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    1. Corresponding angles

  3. KatherinePierce1864
    • 2 years ago
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    @ParthKohli does that mean my other answers are right?

  4. lgbasallote
    • 2 years ago
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    number 1 is wrong.. <1 and <2 are supplementary...but they're not congruent

  5. lgbasallote
    • 2 years ago
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    remember the transversal law.. |dw:1349494407179:dw| the angles with one line are congruent to the angles with one line...angles with two lines are congruent to angles with two lines

  6. lgbasallote
    • 2 years ago
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    got it?

  7. KatherinePierce1864
    • 2 years ago
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    Yeah, I guess. I thought that question 1 was <7

  8. lgbasallote
    • 2 years ago
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    look closely at my drawing... these are the angles that are congruent |dw:1349494548934:dw|

  9. lgbasallote
    • 2 years ago
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    now.. angle 1 is here|dw:1349494584613:dw|

  10. lgbasallote
    • 2 years ago
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    so what angle do you think is congruent to it?

  11. KatherinePierce1864
    • 2 years ago
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    5?

  12. lgbasallote
    • 2 years ago
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    right

  13. lgbasallote
    • 2 years ago
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    that drawing is also applicable to your question 3

  14. KatherinePierce1864
    • 2 years ago
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    so 3 isnt 42?

  15. lgbasallote
    • 2 years ago
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    it is

  16. KatherinePierce1864
    • 2 years ago
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    Oh okay

  17. lgbasallote
    • 2 years ago
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    as for number 2..you can figure it out by looking at <1 and <8...if you notice, they are both OUTSIDE and on DIFFERENT SIDES do those capitalized words give you any hint?

  18. KatherinePierce1864
    • 2 years ago
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    does that mean there exterior?

  19. lgbasallote
    • 2 years ago
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    yes

  20. KatherinePierce1864
    • 2 years ago
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    @lgbasallote I have another problem, like the one above, do you think you can help me with that one as well??

  21. lgbasallote
    • 2 years ago
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    sure

  22. KatherinePierce1864
    • 2 years ago
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    4. What is the value of x? (1 point) 10o 25o 30o 120o 5. What is the measure of 1? (1 point) 45o 60o 120o 125o

  23. lgbasallote
    • 2 years ago
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    here's a hint 4x and x+ 30 are supplementary angles

  24. lgbasallote
    • 2 years ago
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    do you know what that means?

  25. KatherinePierce1864
    • 2 years ago
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    no, sry. do you mind explaining a bit more?

  26. lgbasallote
    • 2 years ago
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    supplementary angles means that if you add 4x and x + 30 you get 180

  27. lgbasallote
    • 2 years ago
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    so add 4x and x + 30 and set it equal to 180 then solve for x

  28. lgbasallote
    • 2 years ago
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    get the idea?

  29. KatherinePierce1864
    • 2 years ago
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    i think so

  30. lgbasallote
    • 2 years ago
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    wonderful

  31. KatherinePierce1864
    • 2 years ago
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    doesn't it come to 5x+30, or am I way off?

  32. lgbasallote
    • 2 years ago
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    yes it does

  33. lgbasallote
    • 2 years ago
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    now make it equal to 180 then solve for x

  34. KatherinePierce1864
    • 2 years ago
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    okay so wouldn't add 5 to 30 or times 30 by 5? hope that makes sense.

  35. lgbasallote
    • 2 years ago
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    5x + 30 = 180 solve for x

  36. KatherinePierce1864
    • 2 years ago
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    would a way to solve the problem be by taking 30 away frm 180 then dividing by that number by 5?

  37. lgbasallote
    • 2 years ago
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    right

  38. KatherinePierce1864
    • 2 years ago
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    x=30

  39. lgbasallote
    • 2 years ago
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    right

  40. KatherinePierce1864
    • 2 years ago
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    okay, what about the next question?

  41. lgbasallote
    • 2 years ago
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    you already have the value of x..so just substitute that to x + 30

  42. KatherinePierce1864
    • 2 years ago
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    Oh right, so 60 then.

  43. lgbasallote
    • 2 years ago
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    right

  44. KatherinePierce1864
    • 2 years ago
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    okay, thank you so much!

  45. lgbasallote
    • 2 years ago
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    welcome

  46. KatherinePierce1864
    • 2 years ago
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    actually the answer was 120 for the last question. :p does that make sense to you?

  47. lgbasallote
    • 2 years ago
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    ....sorry i thought 1 was at x + 30

  48. lgbasallote
    • 2 years ago
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    it seems 1 is the supplement of x + 30 so you have to subtract 60 from 180

  49. KatherinePierce1864
    • 2 years ago
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    oh okay. Now I know and its okay. I still got a 80% on the test so its cool.

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