Question:
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?
Solution:
Let the angle be $\mathrm{x}$.
$A$ ll the angles are equal.
$\therefore x+x+x+x=360^{\circ}$
$4 x=360^{\circ}$
$x=90^{\circ}$
So, each angle is $90^{\circ}$ and quadrilateral is a parallelogram. It is a rectangle.