Problem 35 Gogeometry

 Attached

Problem aops, https://artofproblemsolving.com/community/c6t48f6h2968879_ltpmq90o_if_ltbac_ltxbcltxcb30o_apbp_aqcq

 My solution in attachment

Problem 1499, Go Geometry

 Attached, my solution to this problem

Problem 1497 Go geometry

 Attached the problem and my solution, I hope you will like it

2017, County phase, 6th form

 

Murat Oz, Geometria top, https://www.facebook.com/photo/?fbid=3187073098209949&set=gm.1281792399257793&idorvanity=830782544358783

 Attached, my idea; I hope you will like it!

Problem 103 Geometri Gunlugu, Abdilkadir Altintas

 

Mathstackexchange

 

Trazo Geometrico Maldito, Math for Change, https://www.facebook.com/Math-for-change-105877241895737/photos/pcb.150956944054433/150954150721379/

 

Geometria (solo trazos), Julio Angel Miranda Ubaldo

 

aops, China homework, 7th grade, https://artofproblemsolving.com/community/c4t48f4h2844224_chinese_7th_grade_student_home_work_can_you_solve_it

 

Training Geometry Olympiad, Hasan Ata, https://www.facebook.com/photo?fbid=5185603564855965&set=gm.685908789336104

 

Geometria Top, Bobby Fischer, https://www.facebook.com/photo/?fbid=1148052139367736&set=gm.1180880672682300

 

Training Geometry Olympiad, https://www.facebook.com/photo/?fbid=2807544239546742&set=gm.669525320974451

 

Own weird problem

 

A new point of view for https://www.facebook.com/photo/?fbid=10157089677487570&set=gm.588036165021100

 A surp

rinsig point of view:

Pedro Miranda, Trazo Geometrico Maldito, https://www.facebook.com/photo?fbid=4918961154846576&set=gm.1324696758042412

 

Geometria Top, Thanos, https://www.facebook.com/photo/?fbid=1377977119315096&set=gm.1159730481463986

 I doubt the author performed annoying trigo calculations, so I tried to figure out such a solution, which you can see in the capture (in fact there is idea for a 2nd solution in Remark, that one I first saw): 

Geometria Top, Angel Silva Palacios, https://www.facebook.com/photo?fbid=775573166736210&set=a.169982140628652

 

Geometria Top, Yuri Pereira, https://www.facebook.com/photo/?fbid=2154032388068533&set=gm.1157913481645686

 

TGM - Felipe Chumpitaz, https://www.facebook.com/104176915536265/photos/a.106679811952642/113764324577524

 

TGO-Felipe Chumpitaz, https://www.facebook.com/photo?fbid=159712029734785&set=gm.307204448078181

 

aops, Japan JMO, 2019, finals 1, https://artofproblemsolving.com/community/c6t48f6h1783289_2019_japan_junior_mathematical_olympiad_finals_1

 

aops, Manhattan Math Comp, https://artofproblemsolving.com/community/c4t48f4h2791248_2016_manhattan_mathematical_olympiad_grades_912_problems_14

 

problem, aops, mmaths mathathon, https://artofproblemsolving.com/community/c4t48f4h2789002_2019_mmaths_mathathon_rounds_57_math_majors_of_america_tournament_for_hs

 Problem 13

Problem, Geometria Top, https://www.facebook.com/photo/?fbid=2016679741874021&set=a.489719407903403

 

Geometria Elemental, SR, https://www.facebook.com/photo/?fbid=10224421427834121&set=gm.3018826571680115

 

aops, https://artofproblemsolving.com/community/c6t48f6h2791349_geometry

 

Geometria Top, https://www.facebook.com/photo/?fbid=4686402538125422&set=gm.1147741619329539

 

TGO, https://www.facebook.com/photo/?fbid=761134564846737&set=a.169982140628652

 

Polish MO 2018, 2nd Round, https://artofproblemsolving.com/community/c6t48f6h1635087_bisector_orthogonal_projection

 

Problem, lost source

 

aops, Brasil Girls Math Tournament, 2021 https://artofproblemsolving.com/community/c6t48f6h2780698_ltcmd_806040_triangle_cd__ab2

 

Geometria Top, Ahmet Cetin, https://www.facebook.com/photo/?fbid=4829364267179224&set=gm.1139463570157344

 

Hristos Siakavaras, Geometria Top, https://www.facebook.com/photo/?fbid=498966641596522&set=gm.1142255109878190

 

aops, https://artofproblemsolving.com/community/c6t48f6h2777057_bi_passing_through_the_midpoint_of_segment_ad

 

Geometria Top, https://www.facebook.com/photo?fbid=688864785823595&set=gm.1137935513643483

 A rather boring solution: 

ToT2, pr. 3, 4, https://pregatirematematicaolimpiadejuniori.wordpress.com/fise-probleme-7/

 

ToT2, pr. 1, 2

 

Angel Silva Palacios, Training Geometry Olympiad, https://www.facebook.com/photo?fbid=751647145795479&set=a.169982140628652

IMO Vientam Team Selection, 2006

 

Thanos Kalogerakis, 2 squares 5, https://www.facebook.com/photo/?fbid=1346995009079974&set=gm.1129734161130285

 

Fise Geometrie, ToT2, pr. 8, https://pregatirematematicaolimpiadejuniori.wordpress.com/fise-probleme-7/

 

Geometria Top, https://www.facebook.com/photo/?fbid=1838602189682800&set=a.243012689241766

 

Geometria (solo trazos), Hakan Ersoz, https://www.facebook.com/photo/?fbid=10157099189012570&set=gm.590554501435933

 

Kledis Ahmetaj, Geometria Top, https://www.facebook.com/photo/?fbid=4654897407960317&set=gm.1125335051570196

 

Geometria (solo trazos), Gomel Jacob, https://www.facebook.com/photo?fbid=1392513264460820&set=gm.1053342181823827

 

Geometria Top, https://www.facebook.com/photo?fbid=1011709316419028&set=gm.1127134761390225

 

SR, Peru Geometrico, Dec. 2020