The diagram shows a parallelogram. The sizes of the angles, in degrees, are: 2x, 3x-15, 2x, 2x+24.?

Work out the value of x. If someone could explain how to get the answer, that would be GREAT!

9 answers by real people - The diagram shows a parallelogram. The sizes of the angles, in degrees, are: 2x, 3x-15, 2x, 2x+24.?

  • 9 days ago

    The sum of the internal angles of a parallelogram (a quadrilateral) is 360 degrees. Hence:

    2x + (3x – 15) + 2x + (2x + 24) = 360

    => 9x + 9 = 360

    => 9x = 351

    => x = 39

    Ans: Value of x is: x = 39

  • pmt853
    9 days ago

    So 3x-15=2x+24 deduct 2x from each side and add 15

    x=39.

    So the angles are 2×39=78 and (2×39)+24=102 degrees.

    Checking (2×78) + (2×102) = 360 degrees.

  • Melvyn
    9 days ago

    2x+3x-15+2x+2x+24=360

    9x +9=360

    9x = 351

    x=351/9 =39 degrees

    so the angles are

    78 degrees

    102 degrees

    78 degrees

    102 degrees

    all the angles of a parallelogram sum to 360

  • MechEng2030
    9 days ago

    2x + (3x – 15) + 2x + (2x + 24) = 360

    9x + 9 = 360 => x + 1 = 40 => x = 39

  • Pinkgreen
    9 days ago

    Since 3x-15=2x+24 (the opposite angles equal),

    3x-2x=24+15=>

    x=39*

  • Dreamer
    9 days ago

    2x+3x-15+2x+2x+24=360

    9x+9=360

    9x=351

    x=39

  • Harry
    6 days ago

    or you could say opposite angles in a parallelogram are equal so 2x + 24 = 3x – 15 and find x that way

  • Ayem Z Mastur
    9 days ago

    add them all up the you equate to 360. so it would be like “2x + 3x-15 + 2x + 2x+24 = 360”. then obtain the value of x. simple.

  • ?
    4 days ago

    Sum of measures of all angles of a triangle = one hundred eighty 3x + 2x – 10 + 3x + 30 = one hundred eighty 3x + 2x + 3x -10 + 30 = one hundred eighty 8x + 20 = one hundred eighty 8x = one hundred eighty – 20 8x = a hundred and sixty x = a hundred and sixty / 8 x = 20 The angles are 3x = 3(20) = 60 2x – 10 = 2(20) – 10 = 40 – 10 = 30 3x + 30 = 3(20) +30 = 60 + 30 = ninety distinction between greatest and smallest angles = ninety – 30 = 60 wish that enables

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