Geometria Super Top, Fatih Sulltan Yıldırım Mehmet, https://www.facebook.com/photo?fbid=10166205834819617&set=gm.2352070885563267&idorvanity=830782544358783

 

Geometria Super Top, 3 lemmas by Selçuk Biçer, https://www.facebook.com/photo.php?fbid=28933846876204712&set=p.28933846876204712&type=3

 

Another lemma: https://www.facebook.com/photo.php?fbid=29385759224346806&set=p.29385759224346806&type=3

 

Geometria Super Top, Henry Quispe, https://www.facebook.com/photo?fbid=1873079414058745&set=gm.2372661803504175&idorvanity=830782544358783

 

Training Geometry Olympiad, Nelson Tunala, repost of Muhammed Anwar, https://www.facebook.com/photo?fbid=28235655256076250&set=gm.1737059440887695&idorvanity=293155508611436

 Use 'double angle lemma', which you may find on this blog.

Lemma by Selçuk Biçer https://www.facebook.com/photo.php?fbid=29252205531035510&set=p.29252205531035510&type=3

 

Lemma by Selçuk Biçer, https://www.facebook.com/photo.php?fbid=29286221834300546&set=p.29286221834300546&type=3

 

Trazo Geometrico Maldito, Nelson Tunala, ILL list problem, https://www.facebook.com/photo?fbid=28163237369984706&set=gm.2500067100505366&idorvanity=715291165649644

 

Training Geometry Olympiad, Aiioo Soo, https://www.facebook.com/photo/?fbid=122247242240137625&set=gm.2366635987440090&idorvanity=830782544358783

 

Geometria Super Top, Thiago Durado, post by Anu

 

Lemma by Selçuk Biçer

 

Geometria Super Top, Pedro Miranda, re-post by Alexander James Sirens https://www.facebook.com/photo?fbid=3373168449530087&set=gm.2361065111330511&idorvanity=830782544358783

 

Geometria Adictiva, Nelson Tunala, author Makros Lu, https://www.facebook.com/photo/?fbid=28043791865262591&set=gm.1031137103309066&idorvanity=184162418006543

 

Proof of Lemma of Selçuk Biçer, https://www.facebook.com/photo.php?fbid=29163354023253995&set=p.29163354023253995&type=3