beautiful geometry

Geometry is a most beautiful subject of mathematics. it is very related with every branch of math or physics. if you are still unaware with thrill of geometry then most probably you need to study geometry in better way. personally whenever i want something to challenge my brain, i just used to solve geometry or probability. we will talk probability later but here i am going to share you some beautiful geometry problems, hope you will enjoy it.
 advice: for getting more fun
 1) Try to avoid algebra (tedious work) as much possible.
 2) make your concept clear 
3) Try to solve in more than one possible way
here is the link of questions  here you go
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Never expect me to solve all the question to result, just here to help you with concept
Imp :- yellow mark question is level of high school. Others are for college level