anik2000 wrote:

digonal of a rectangle does not split 90 degree into half but does the diagonal of the parallelogram split the angle int half? please help

A rectangle is a special parallelogram (such that angles are 90 degrees). All properties of a parallelogram will be applicable to a rectangle (and some extra ones will be applicable too).

Since the diagonal of a rectangle does not split the 90 degree angle into 45 degree angles each, same will be true for a parallelogram too.

On the other hand, the diagonal of a rhombus splits the angle (whatever it may be) into equals.

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