Beautiful Geometry 1

Since 2018, Catriona Shearer, a UK teacher, has been posting on her Twitter various colorful geometry puzzles. In this mini-course, we cover some of her best problems and provide elegant solutions to them. Use the pagination below to navigate the puzzles.

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Example Problems

What fraction of the hexagon is shaded?
Which area is larger, the yellow or the red one?
What is the area of the large square?
What fraction of the outer circle is shaded?
If the circle radius is 1, what area is shaded?
What fraction of the decagon is shaded?