A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 2 years ago

2. A parallelogram has the vertices (-1, 2), (4, 4), (2, -1) and (-3, -3). Determine what type of parallelogram [10 points]. Find the perimeter and area [20 points].

  • This Question is Closed
  1. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  2. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That's what I got...but clearly it's not a parallelogram, so what am I doing wrong, and what do I need to do differently?

  3. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ganeshie8, please help!

  4. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    http://prntscr.com/3eu6hv

  5. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ^^thats how it should look. graphing is a very good idea, but u dont need to graph to solve this problem.

  6. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Ohhh...duh. Apparently I'm going to be stupid today, brilliant. Thnx for the help! :)

  7. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    u figured how to work the problem ?

  8. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    BTW, someone told me the answer to this problem was 12. Are they right? I got 4.2... √((3) – (0))² + ((0) – (3))² = √3² + -3² = √9 + 9 = √18 ≈ 4.2

  9. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes, I did

  10. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    show me ur complete work

  11. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    For the first problem?

  12. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    for both

  13. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Ah...ok

  14. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    what ever u have so far...

  15. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    just a mo, then

  16. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

  17. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    working on the second question now

  18. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Are you given instructions that u need to work it by graphing ?

  19. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yeah, they taught graphing and the distance formula and whatnot

  20. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no, i mean did the instructions specifically ask u to do this by graphing ?

  21. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    cuz, u should NOT use graphing unless the instructions say so

  22. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    the common/regular way to work this problem is by finding lengths of sides using `distance formula` and the slopes of sides using `slope formula`

  23. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Those were the directions they gave me

  24. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    cool :) then you're right ! they want u work it by graphing

  25. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Given that they gave me the graph, I would assume that they want me to solve it by graphing, but I also used the distance formula to find the lengths of the sides

  26. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok :)

  27. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    good :) your length of sides, and perimeter are correct. but Area is wrong.

  28. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    squaring sides will not give u Area for a rhombus.

  29. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ohh..just looked it up A - diagonal x diagonal/2

  30. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Area of rhombus = \(\frac{1}{2} d_1 d_2\)

  31. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes^

  32. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Great, now I have to find the diagonals, lol

  33. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    its easy from graph

  34. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    horizontal diagonal = 3--3 = 6 vertical diagonal = 3--3 = 6

  35. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So, Area = \(\frac{1}{2} d_1 d_2 = \frac{1}{2} 6*6 = 18\)

  36. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    And that makes the given rhombus a SQUARE !

  37. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so the given parallelogram is not just a rhombus, its also a SQUARE !

  38. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    for the `type of parallelogram `, you should say that its a `square`

  39. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    if that makes any sense..

  40. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The parallelogram is a rhombus and a square?

  41. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    just say its a SQUARE !

  42. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    rhomus: all equal sides, two pairs of equal angles square: equal sides, equal angles

  43. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh, ok

  44. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Does that change my equation for the area, then?

  45. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    all squares are parallelograms all squares are rhombuses all squares are rectangles all squares are quadrilaterals

  46. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    a square is many things

  47. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes it will change ur formula, but the answer will be same

  48. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I see that, lol

  49. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    let me modify it and give u

  50. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it will be?

  51. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

  52. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    here is the corrected stuff for question 1 : http://prntscr.com/3euc4h

  53. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

  54. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    how do you find the diagonals inside a rhombus?

  55. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    use the distance formula

  56. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh, its the same process, ok, hold on

  57. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok, i presume u knw what a diagonal is :)

  58. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    it just connects the opposite vertices

  59. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1398867292759:dw|

  60. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1398867314860:dw|

  61. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ^^those two line segments joining opposite vertices are diagonals

  62. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

  63. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Is that correct? I found it odd that I got the same area for #1 and #2...but maybe that's just a coincidence

  64. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    diagonals are not equal in rhombus

  65. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so u need to calculate the 2nd diagonal also using distance formula

  66. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    and then use the area of rhombus formula : Area = \(\frac{1}{2}d_1 d_2\)

  67. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

  68. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ganeshie8

  69. ganeshie8
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    looks good !

  70. anonymous
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thnx! :D

  71. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.