The proof of the The proof of the impossibility of trisecting the angle with ruler and straight edge is here http://sites.mathdoc.fr/JMPA/PDF/JMPA_1837_1_2_A31_0.pdf This might help you to find out where you went wrong. Reply
The proof of the impossibility of trisecting the angle with ruler and straight edge is here http://sites.mathdoc.fr/JMPA/PDF/JMPA_1837_1_2_A31_0.pdf
This might help you to find out where you went wrong.