Choose whether the given statement is true/false: 

A point on the circumference of a circle has only one tangent.

The given statement is true.

Let P be any point on the circle with centre O.

OP is the radius of the circle.

If line l containing points P and Q is perpendicular to OP then OQ>OP because the perpendicular is the shortest distance from a point to a line.

Therefore, every point except P is outside of circle O and the line.

Therefore, a point on the circumference of a circle has only one tangent.