Rectangular Car...

If A and B are two fixed points and P is a variable point such that PA + PB = 4, then the locus of P is a/an

If A and B are two points in a plane, so that PA – PB = constant, then the locus of P is

If A and B are two fixed points in a plane and P is another variable point such that PA² + PB² = constant, then the locus of the point P is

ABC is an isosceles triangle. If the co-ordinates of the base are B(1,3) and C(-2,7), the co-ordinates of vertex A can be

The point of trisection of the line joining the points (0,3) and (6,-3) are

The line y = x meets y = ke^x for k ≤ 0 at

Point Q is symmetric to P(4, -1) with respect to the bisector of the first quadrant. The length of PQ is

A stick of length l rests against the floor and a wall of a room. If the stick begins to slide on the floor, then the locus of its middle point is

If the vertices of a triangle have integral co-ordinates, then the triangle is