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Which of the following relation is correct if ABCD is a parallelogram and BF and DE are perpendiculars to AC?

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The opposite sides are parallel and equal. The opposite angles are equal. The consecutive or adjacent angles are supplementary. If any one of the angles is a right angle, then all the other angles will be at right angle.


Which of the following relation is correct if ABCD is a parallelogram and BF and DE are perpendiculars to AC?<br /><img src='https://www.fatskills.com/class9maths/mathematics-questions-answers-properties-parallelogram-2-q5.png' width='288' height='217' />






 
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