Loci in Two Dimensions (Set 2)

Choose the best answer for each question.
 1. In the diagram, PKQ, QLR and PMR are straight lines.Among the points <b>A, B,C and D</b>, which one is equidistant from the points Q and R and also at a distance greater than 3 cm from the line QR?
 2. In the diagram above, PRQ is a diameter of a circle of radius 3 cm. A point H moves in such a way that it is at a distance of 1 cm from line PRQ while a point K moves in such a way that it is at a distance of 3 cm from R. The number of points of intersection of the loci of H and K is
 3. In the diagram, PQRS is a square of side 14 cm. STQ, NTL, PTR and KTM are straight lines. A point U moves in such a way that it is always equidistant from the points K an L. The locus of U is
 A) a circle
 B) the straight line PR
 C) the straight line sq
 D) the circular arc KL
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