Question
ABCD is a parallelogram if ________.
- x = - 5
- x =
- x = 17
- x = 9
Hint:
A parallelogram is a flat 2d shape which has four angles.
The opposite interior angles are equal. The angles on the same side of the transversal are supplementary, that means they add up to 180 degrees. Hence, the sum of the interior angles of a parallelogram is 360 degrees.
The correct answer is: x = 9
We know that, the opposite angles of a parallelogram are equal.
9x -13 = 7x + 5
2x = 18
x = 9
Thus, ABCD is a parallelogram if x = 9
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