T C O $ R B P 1. tangent line 2. secant 3. external secant segment 4. tangent segment

[tex]\huge\purple{\boxed{{\colorbox{black}{Thanks}}}}[/tex][tex]\huge\purple{\boxed{{\colorbox{black}{Thanks}}}}[/tex][tex]\huge\purple{\boxed{{\colorbox{black}{Thanks}}}}[/tex][tex]\huge\purple{\boxed{{\colorbox{black}{Thanks}}}}[/tex]