Question

prove that that bisectors of any two adjacent angles of a parallelogram are at right angles



Do explain with a figure please

Answer 1

since sum of adjacent angles of a parallelogram => 180 degrees
therefore bisectors => 180/2=> 90 degrees
if sum is two angles in a triangle is 90 degrees then the other angle will be 180-90=> 90 degrees . therefore it is a right angle

Answer 2

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