Selçuk Biçer, Geometria Super Top https://www.facebook.com/photo/?fbid=27989747883947954&set=gm.2272984176805272&idorvanity=830782544358783

 

Selçuk Biçer, Geometria Super Top https://www.facebook.com/photo?fbid=27986904327565643&set=gm.2272807920156231&idorvanity=830782544358783

 

Trazos Auxiliares en Geometria, Nelson Tunala, https://www.facebook.com/photo?fbid=26869205252721264&set=gm.970115739061806&idorvanity=195960136477374

 

Geometria Super Top, Fatih Eymen Hallaç, https://www.facebook.com/photo?fbid=10163777728503190&set=gm.2270719707031719&idorvanity=830782544358783

 For explanation and proof of triple angle lemma you may scroll my blog!

aops, https://artofproblemsolving.com/community/c4t48f4h2035282_dab90oadc___bam____adb___cam_kharkiv_city_x_2017_ukr

 

Nelson Tunala, Trazos Auxiliares en Geometria, https://www.facebook.com/photo?fbid=26831171749857948&set=gm.967353269338053&idorvanity=195960136477374

 

Alexander James Sirens, Geometria Super Top, https://www.facebook.com/photo?fbid=3264273037086296&set=gm.2267871483983208&idorvanity=830782544358783