اثبات مرحله به مرحله

Nagel Point Theorem Proof

Butterfly Theorem

Ceva's Theorem

Clifford's Theorems

Bevan Point

بعضی از نقاط خاص درمثلث

 1. Centroid

 2.  Orthocenter

 3.  Circumcenter

 4.  Incenter

 5.  Excenter

 6. Apollonius Point

7. Nine-Point Center

 8. Gergonne Point

 9. Nagel Point.

 10. Fermat Point

 11. Napoleon Point

 12. Bevan Point V. See: Illustration with animation

 13. Vecten Point V

 14. Symmedian (Lemoine) Point 

Symmedian (Lemoine) Point

 15. Mittenpunkt or Middlespoint 

Mittenpunkt Point

 16. Steiner Point

Steiner Point