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?

Draw two circles passing through A, B where AB = 5.4cm

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

There are five points A,B,C,D and E. no three points are collinear and no four are concyclic. If the line AB intersects of the circles drawn through the five points. The number of points of intersection on the line apart from A and B is

Prove that perpendicular at the point of contact to the tangent to circle passes through the centre.

The perpendicular at a point of contact to the tangent to a circle passes through the centre.

Find the centre of the circle passing through the points (6,-6),(3,-7) and (3,3).

Give equations of any four lines passing through point (5,7)

State the number of lines passing through three distinct non-collinear points.