P, Q, R are three points in a plane. Join them in pairs. How many lines will you get if-
(a) P, Q and R are not collinear.
(b) P, Q and R are collinear.

Show that the points P(2,6),Q(1,2)and R(3,10) are collinear.

A,B and C are three collinear points. How many line segment can be determined by them? Name these lines segments?

If the three points (3q,0), (0, 3p) and (1, 1) are collinear, then which one is true ?

If P,Q and R are the mid-point of the side BC,CA and AB of a triangle and AD is the perpendicular form A and BC, prove that P,Q and D are concylic.

Given p points in a plane, no three of which are collinear q of these Points, which are in the same straight line. Determine the number of (I) straight lines

Let P , Q and R are three co-normal points on the parabola y^2=4ax . Then the correct statement(s) is /at

Draw the images P' Q' R' of the points P,Q,R respectively in the line l . Join P'Q' R to form an angle P'Q'R .What can you say about the two angles anglePQR and angleP'Q'R

In a quadrilateral P Q R S , vec P Q= vec a , vec Q R = vec b , vec S P= vec a- vec b ,M is the midpoint of vec Q Ra n dX is a point on S M such that S X=4/5S Mdot Prove that P ,Xa n dR are collinear.