Can you solve this neat geometry puzzle? Thanks to Joe M. for the suggestion!

Sources
https://brilliant.org/practice/circle-properties-level-2-3-challenges/?problem=day-5-five-golden-circles&subtopic=circles&chapter=circle-properties
http://blog.mrmeyer.com/2016/how…

(Submitted by @FDerivees)

Describe Newton in one word:

@justinlanday This is gonna become my new area of research

https://t.co/lttHmUAu37

https://t.co/E31wFdVbfg

(Submitted by @enter468)

Me at the beginning of a pure science degree vs. now