Step 1: Draw a circle with center O and mark a point (P) outside the circle.

Step 2: Try to draw  tangents more than two

            NOTE: Two tangent lines can be drawn to a circle from a point P outside of

            the circle. Remaining lines are penetrate the circle.

> Two congruent right triangles are so formed, since the tangent line is perpendicular to the radius. So line AC has the same length as line BC.