If the coordinates of the points `A, B, C` and D be `(a, b), (a', b'), (-a, b)` and `(a',-b')` respectively, then the equation of the line bisecting the line segments AB and CD is

If the coordinates of the points A,B,C,D be (1,2,3) (4,5,7) (-4,3,-6) and respectively,then find the angle between the lines AB and CD.

If the coordinates of the points A,B,C be (-1,5),(0,0) and (2,2) respectively, and D be the middle point of BC , then the equation of the perpendicular drawn from B to the line AD is

If the coordinates of points A and B are (-2, -2) and (2, -4) respectively, find the coordinates of the point P such that AP = (3)/(7)AB , where P lies on the line segment AB.

In an isosceles triangle ABC, the coordinates of the points B and C on the base BC are respectively (1,2) and (2.1). If the equation of the line AB is y=2x, then the equation of the line AC is

The co-ordinates of the points A,B,C are (-4,0),(0,2)&(-3,2) respectively.The point of intersection of the line which bisects the angle CAB internally and the line joining C to the middle point of AB is

If A and B are (-2,-2) and (2,-4) respectively, find the coordinates of P(x,y) such that AB=7/3 and P lies on the line segment AB.

The equation of the line bisecting the line segment joining the points (a,b) and (a',b') at right angle,is

If A and B are quad (-2,-2) and (2,-4) ,respectively,find the coordinates of P such that AP=(3)/(7)AB and P lies on the line segment AB.

If the coordinate of point A is -5 on a number line and that of B is 3, find d(A,B).

The direction rations of two lines are a,b,c and (b-c) , (c-a),(a-b) respectively . The angle between these lines is