Question-16665

Question Number 16665 by b.e.h.i.8.3.4.1.7@gmail.com last updated on 25/Jun/17

Commented by b.e.h.i.8.3.4.1.7@gmail.com last updated on 25/Jun/17

A B C D E, i s r e g u l a r .^{'} F^{'} i s a p o i n t o n

c i c u m c i r c l e .

1) p r o v e t h a t :

F D + F A + F C = F E + F B

2) i f : D C = 1, F A = \sqrt{5}, f i n d a l l s e g m e n t s

w i t h^{'} F^{'} a s s t a r t p o i n t .

3) f i n d a l l a n g l e s w i t h^{'} F^{'} a s v e r t e x .