Question

ABCD is a parallelogram. If its diagonals are equal, then find the value of angle ABC.​

Answer 1

Step-by-step explanation:

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

Answer 2

Step-by-step explanation:

As the diagonals are equal then angle ABC is equal to angle ADC as angles are not mentioned in the question nor the type of parallelogram so...