All the angles of a quadrilateral are equal to each other. Find the measure of each. Is the quadrilateral a parallelogram? What special type of parallelogram is it?

Let each angle of parallelogram ABCD = x°

Sum of all the angles = 360°

Therfore each angle of the parallelogram is equal to 90°

Yes, this quadrilateral is a parallelogram. Aparallelogram with each angle equal to 90° is a rectangle.