Twenty Questions Of Maddening, Delicious Geometry (mathwithbaddrawings.com)

Are links to the answers provided?

I hate geometry. FLAGGED

These would make excellent AMC problems. Visually pleasing diagrams, nontrivial uses of similarity, many problems having a “nice” and a “brute-force” solution–all of these fit right in.

Clever.

#3 was particularly elegant, once I saw the trick. I got x=5 for it.

Amazing presentation, and just the right difficulty. Thanks for posting this!

Warning, the comments are spoilers in many cases. :(

For fans of geometry I can recommend the following book:

Apostol, Mnatsakanian: New Horizons in Geometry : https://www.amazon.com/Horizons-Geometry-Dolciani-Mathematic...

See also: https://en.wikipedia.org/wiki/Visual_calculus

These are awesome puzzles!

There are a few problems where I wish they'd be clearer about what the number labels mean. Areas? Edge lengths? They look like they're labeling areas, but I assume that figuring out what the numbers mean isn't intended to be part of the puzzle.