Djaffali Nadime, Geometria Super Top, https://www.facebook.com/photo?fbid=122253564590165473&set=gm.2164210881015936&idorvanity=830782544358783

 

Geometria Super Top, Alexander James Sirens, https://www.facebook.com/groups/830782544358783/posts/2162324854537872

 Note: more about 'Triple Angle Lemma' you may find in my book 'Rose Thorns - Geometry Jewels'

aops, Kosovo National Olympiad, 2026, 7th form, https://artofproblemsolving.com/community/c6t48f6h3754755_easy_geometry

 

https://artofproblemsolving.com/community/c4h2130469p15566806

 

Rioplatense Olympiad, 2024, https://artofproblemsolving.com/community/c4t48f4h3752889_ab__dc_if_abdcbd_rioplatense_2024_l1_4

 

Youtube Channel of Hasan Ata, https://www.youtube.com/watch?v=tZitaT57e44

 

Mohamed Zouaghi, I Love Geometry, https://www.facebook.com/photo?fbid=2592656487781865&set=gm.1609815720455736&idorvanity=1216680106435968