Tangent length theorem

Tangent length theorem

Two tangent lines of a circle from a point outside the circle are equal in length. The line between the center of the circle and this point bisects the angle between the two tangent lines
Two tangents of a circle leading from a point outside the circle point to this point and make two tangents tangent to the circle respectively (there is one on both sides). In other words, they are two straight lines perpendicular to the radius of the tangent point