A clockwise rotation around point Z (that is, a rotation
in the direction of the arrow) transforms the shaded
quadrilateral to the unshaded quadrilateral. The angle
of rotation is approximately Options:
A) 180o
B) 270o
C) 360o
D) 45o
E) 135o
The measure of \PZQ formed by the bottom edge of the shaded   quadrilateral, ZQ, and this same edge after the rotation, ZP, is   approximately 90.   The transformation of the shaded quadrilateral to the unshaded   quadrilateral is a clockwise rotation around point Z through an an-   gle equal to the measure of re   ex angle PZQ.   The measure of \PZQ added to the measure of re   ex \PZQ is   equal to the measure of one complete rotation, or 360.   Therefore, the measure of re   ex angle PZQ is approximately   360o - 90o or 270o.   Thus the clockwise rotation around point Z is through an angle of   approximately 270o   correct answer 270o
<result>B</result>
A clockwise rotation around point Z (that is, a rotation
in the direction of the arrow) transforms the shaded
quadrilateral to the unshaded quadrilateral. The angle
of rotation is approximately