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perl

Geometry Mathquestion for Loveya69

  • 11 months ago
  • 11 months ago

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  1. perl
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    give me a second, lol

    • 11 months ago
  2. LoveYou*69
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    Okay cx

    • 11 months ago
  3. perl
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    how do you upload an image?

    • 11 months ago
  4. LoveYou*69
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    Attach File *I think*

    • 11 months ago
  5. perl
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    thanks

    • 11 months ago
  6. perl
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    sorry for the wait

    • 11 months ago
  7. perl
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    number 31

    • 11 months ago
  8. perl
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    |dw:1366882143016:dw|

    • 11 months ago
  9. perl
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    nope, doesnt have to be congruent

    • 11 months ago
  10. perl
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    we want it to be a parallelogram. only opposite sides of a parallogram have to be congruent, but thats not really going to be used here

    • 11 months ago
  11. perl
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    lets start with D)

    • 11 months ago
  12. LoveYou*69
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    Well, if DAB = 40º, and DCB = 40º then ADC = ABC which makes it a parallelogram right?

    • 11 months ago
  13. perl
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    i meant, not all 4 sides have to be congruent

    • 11 months ago
  14. perl
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    why does <ADC = <ABC?

    • 11 months ago
  15. LoveYou*69
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    because if those two angles are equal then wouldnt the other two that are across from each other be equal?

    • 11 months ago
  16. Peter14
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    not necessarily

    • 11 months ago
  17. perl
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    let me redraw that

    • 11 months ago
  18. LoveYou*69
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    Really Peter?:/ Try drawing that with those two angles equaling exactly 40º and see if you can get the other two angles not to equal each other.

    • 11 months ago
  19. Peter14
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    a kite

    • 11 months ago
  20. perl
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    |dw:1366882582720:dw|

    • 11 months ago
  21. perl
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    peter, oh yes a kite does satisfy these conditions , but is not a parallelogram

    • 11 months ago
  22. Peter14
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    are rhombuses (rhombii?) kites?

    • 11 months ago
  23. .Sam.
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    Can I post the solution? ;)

    • 11 months ago
  24. perl
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    sam, i would prefer you not, but...

    • 11 months ago
  25. perl
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    give loveyou a chance :)

    • 11 months ago
  26. LoveYou*69
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    DC and AB are congruent angles tho right? so if ABC = DCB then ADC = CBA which means DC = AB and DA = BC

    • 11 months ago
  27. LoveYou*69
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    Lets not give me a chance lol im making myself feel stupid

    • 11 months ago
  28. Peter14
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    how about this: look at all the choices from D to A and try to draw a counterexample for each one.

    • 11 months ago
  29. perl
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    peter, good idea :)

    • 11 months ago
  30. LoveYou*69
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    lol,letsnot, i didnt get sleep im too tired for this :P

    • 11 months ago
  31. Peter14
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    no, let's do it!

    • 11 months ago
  32. LoveYou*69
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    Feel free

    • 11 months ago
  33. Peter14
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    no! i'm volunteering you to do it! it's your problem... I already know the answer.

    • 11 months ago
  34. LoveYou*69
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    It's not my problem lol

    • 11 months ago
  35. Peter14
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    "Geometry Mathquestion for Loveya69"

    • 11 months ago
  36. LoveYou*69
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    It's not mine .-. If it was mine I'd be able to do it. I have 100 in my geometry class. but im not even doing this stuff in mine

    • 11 months ago
  37. perl
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    Definition: A kite is a quadrilateral with two distinct pairs of adjacent sides that are congruent. (1) The diagonals of a kite meet at a right angle. (2) Kites have exactly one pair of opposite angles that are congruent.

    • 11 months ago
  38. Peter14
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    thanks perl, I didn't remember that

    • 11 months ago
  39. perl
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    and here http://www.wyzant.com/help/math/geometry/quadrilaterals/trapezoids_and_kites

    • 11 months ago
  40. perl
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    peter I got B)

    • 11 months ago
  41. mayankdevnani
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    @perl in my opinion the answer would be option b and option d!!!!!

    • 11 months ago
  42. perl
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    option d is wrong, because you can produce a kite , b is right

    • 11 months ago
  43. perl
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    a kite satisfies option d and is not a parallelogram

    • 11 months ago
  44. mayankdevnani
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    but in quest. it is given that it is a parallegoram and in parallelogram , opposite sides are equal!!!!!

    • 11 months ago
  45. mayankdevnani
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    @perl and @Peter14

    • 11 months ago
  46. Peter14
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    no, in question it is given what conditions must be true for it to be a parallellogram

    • 11 months ago
  47. mayankdevnani
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    but what about angles of kite?????

    • 11 months ago
  48. mayankdevnani
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    @perl and @Peter14

    • 11 months ago
  49. mayankdevnani
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    |dw:1366929990059:dw|

    • 11 months ago
  50. Peter14
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    only two angles are given to be 40 degrees. The other two angles can be anything so that the sum of the 4 angles is 360 degrees

    • 11 months ago
  51. mayankdevnani
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    |dw:1366930082573:dw|

    • 11 months ago
  52. mayankdevnani
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    in triangle abc, it is an isosceles triangle. it means that angle 1=angle2!!!! right @Peter14

    • 11 months ago
  53. Peter14
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    sure. set the sum of angles 1 and 4 to 40 degrees and the sum of angles 2 and 5 will also be 40 degrees.

    • 11 months ago
  54. Peter14
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    sure, it could be a rhombus, and therefore a parallelogram, but you can't assume that.

    • 11 months ago
  55. mayankdevnani
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    @Peter14 for this time, please forgot the question, concerntrate on my question!!!!

    • 11 months ago
  56. Peter14
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    angles 3 and (not given) could vary. the sum just has to be 280.

    • 11 months ago
  57. Peter14
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    sure, let's go with your question. yes, angle 1 = angle 2 and angle 4= angle 5.

    • 11 months ago
  58. mayankdevnani
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    but in perl question!!!!!

    • 11 months ago
  59. Peter14
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    |dw:1366885812169:dw| so what about its angles?

    • 11 months ago
  60. mayankdevnani
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    angle 1=angle2 and angle4=angle 5

    • 11 months ago
  61. Peter14
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    yes... and?

    • 11 months ago
  62. mayankdevnani
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    and what?

    • 11 months ago
  63. Peter14
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    what exactly are you trying to prove here?

    • 11 months ago
  64. mayankdevnani
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    that adjacent angles are equal

    • 11 months ago
  65. perl
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    |dw:1366886101425:dw|

    • 11 months ago
  66. perl
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    its difficult to force this into a kite shape

    • 11 months ago
  67. perl
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    @Peter14 this definition is wrong: Definition: A kite is a quadrilateral with two distinct pairs of adjacent sides that are congruent. (1) The diagonals of a kite meet at a right angle. (2) Kites have exactly one pair of opposite angles that are congruent.

    • 11 months ago
  68. Peter14
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    (shrug) It doesn't really matter to me. I've already taken geometry.

    • 11 months ago
  69. perl
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    it doesnt have to be exactly one pair of congruent sides, both pairs could be congruent. here is an animation http://www.mathsisfun.com/definitions/kite.html

    • 11 months ago
  70. perl
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    for instance a square is a kite

    • 11 months ago
  71. perl
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    it should say, a kite has at least one pair of congruent angles

    • 11 months ago
  72. perl
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    @Peter14 here is a discussion, its a controversy http://answers.yahoo.com/question/index?qid=20100506151637AAPkWXY

    • 11 months ago
  73. perl
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    about kites!

    • 11 months ago
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