Question

two of the adjacent angles of a parallelogram are equal show that the parallelogram is a rectangle​

Answer 1

Answer:Easy

Step-by-step explanation:

Since two opposite sides have to be parallel, the only possibility for there two be identical adjacent angles is for them to be 90 degrees, as adjacent angles always add up to 180 degrees.

Answer 2

Answer:

please mark me briliant

Step-by-step explanation:

The sum of the angles in a prallelogram is  360o . We know that the opposite angles are equal. If, therefore, the adjacent angles also are equal, it means all 4 angles are equal, with the result that they are right, i.e.  90o . Such a parallelogram is usually called a rectangle.