if three points are collinear , how many circles can be drawn through these points? Now, try to draw a circle passing through these three points.

How many chords can be drawn through 21 points on a circle?

Only one circle can be drawn through three non-colinear points.

Only one circle can be throught three collinear points .

Write True or False: Only one circle can be drawn through three collinear points.

The line through the points (a , b) and (-a , -b) passes through the point

The line through the points (a, b) and (-a, -b) passes through the point

There are 10 points in a plane of which no three points are collinear and four points are concyclic. The number of different circles that can be drawn through at least three points of these points is (A) 116 (B) 120 (C) 117 (D) none of these

AB is a diameter of a circle with centre O , P is any point on the circle, the tangent drawn through the point P intersects the two tangents drawn through the points A and B at the points Q and R respectively. If the radius of the circle be r , then prove that PQ.PR=r^(2) .

5 non-colinear points are to be drawn and find how many straight lines can be drawn through them.

Only three tangents can be drawn from a external point of a circle.