Mathematics
Grade9
Easy

Question

The measure of  is ________.

  1. 62 degree
  2. 18 degree
  3. 64 degree
  4. 32 degree

hintHint:

angle sum property of a parallelogram :sum of adjacent angles in a parallelogram = 180

The correct answer is: 62 degree


    62
    In this case, < ADC and < DCB add up to give 180.
    Hence, < DCB + 65 = 180
    < DCB = 115 => 2p -9 = 115
    2p = 124
    p = 62

    By angle sum property of a parallelogram, we know that sum of adjacent angles in a parallelogram = 180.

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