State 'T' for true and 'F' for false.
a. The hand of a clock will stop at 9 if it start from 12 and makes 3/4 of a revolution, clockwise.
b. Sector is the region in the interior of a circle enclosed by an arc and a chord.
c. Every diameter of a circle is its chord but every chord is not the diameter.
d. A line dividing a line segment into two equal parts at right angle is called perpendicular bisector of the line segment.