What fraction is shaded? A compilation of 99 geometry puzzles made by Diego Rattaggi, published on Twitter 2019-2024. The puzzles look simple and have a simple answer, but they are not always easy to solve. Have fun!

Autorentext
Diego Rattaggi works as a maths teacher in Switzerland. He has created many geometry puzzles in his spare time, on average about one every evening for the last five years.