A is a point on x-axis, B = (5, -4) and AB = 5 units, find the co-ordinates of A.

Show that A(0, 0), B(5, 5) and C(-5, 5) are vertices of a right angled isosceles triangle.

What point on y-axis is equidistant from the points (7, 6) and (-3, 4) ?

Calculate the distance between A(7, 3) and B on the x-axis whose abscissa is 11.