Prove that the segment joining the point of contact of two parallel tangents passes through the centre.

Prove that the line segment joining the points of contact of two parallel tangents passes through the centre.

Prove that the line segment joining the points of contact of two parallel tangents of a circle, passes through its centre.

The line joing the points of contact of two parallel tangents to a circle passes through the centre.Prove it.

Prove that the line joining the mid-points of two parallel chords of a circle passes through the centre.

Prove that the line joining the mid-points of two parallel chords of a circle passes through the centre.

Prove that the line joining the mid-points of two parallel chords of a circle passes through the centre.

Prove that the line joining the mid-points of two parallel chords of a circle passes through the centre.

Prove that the perpendicular at the points of contact to the tangents to a circle passes through the centre.

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