ABCD is a parallelogram if the two diagonals are equal ,find the measure of angle ABC

Asked by  | 8th Sep, 2012, 12:43: PM

Expert Answer:

In a parallelogram if two diagonals are equal, then the parallelogram is a rectangle.

So, ABCD is a rectangle.

It is known that each interior angle of a rectangle is 90 degree.

Since ABC is an interior angle of rectangle ABCD, so measure of angle ABC is 90 degree.

Answered by  | 8th Sep, 2012, 08:11: PM

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