Parallelogram to Rectangle: Determining Special Properties in Quadrilateral ABCD

Question

Determine whether the parallelogram below is a rectangle?

00:00 Is the parallelogram a rectangle?

00:03 A rectangle is a parallelogram with right angles

00:06 It seems that the given angle is not right, therefore not a rectangle

00:09 And this is the solution to the question

The parallelogram in the drawing cannot be a rectangle because in a rectangle all angles are right angles, meaning they are equal to 90 degrees.

Angle A is greater than 90 degrees.