Question

a) If
one of the angles of a parallelogram
is a right angle, prove that it is a rectangle?​

Answer 1

Answer:

yoo...

Step-by-step explanation:

It's called a parallelogram the sides must be parallel...lol

Answer 2

Answer:

Yes

Step-by-step explanation:

If one angle is a right angle then it's opposite angle is also right angle ......{opposite angles of parallelogram are equal}

Also,

90°+ adjacent angle = 180°

adjacent angle = 180°-90°

adjacent angle = 90° ......{adjacent angles of a parallelogram are equal to 180°}

Also the opposite angle of the adjacent angle will be equal that is 90°

As all angles are 90°, it is a rectangle.