Mathematics
Grade9
Easy

Question

The sum of the interior angles of a parallelogram is ______.

  1. 120 degree
  2. 360 degree
  3. 450 degree
  4. 180 degree

hintHint:

count the number of sides of the polygon.

The correct answer is: 360 degree


    360
    Parallelogram is a quadrilateral, with 4 sides.
    Hence , Sum of internal angles of a polygon =( n-2) x 180
    n = 4
    =(4-2) x 180 = 360 degrees

    Sum of internal angles of a polygon =( n-2) x 180
    sum of external angles of a polygon =360

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