The points A(7, 3), B(6, 1), C(8, 2) and D(9, 4) taken in that order are the vertices of

If (a, 2) lies in II quadrant, then (-a, -2) lies in which quadrant ?

The quadrilateral formed by the points A(0, -1), B(2, 1), C(0, 3) and D(-2, 1) taken in the same order is

If P(3, 4) and Q(7, 7) are two points and PR = 10, where P, Q and R are collinear, then R =

If (-2, 1), (1, 0) and (4, 3) are three consecutive vertices of a parallelogram, then the fourth vertex is

(0, 0), (1, 0), (0, -4) are the vertices of a ……… triangle.

If (8,1), (k, -4), (2, -5) are collinear, then k =

If the slope of the line through (2, -7) and (x, 5) is 3 then x =

The distance between the points (cosθ, sinθ) and (-sinθ, cosθ) is

The number of elements in a triangle is