The “Fundamental Knowledge” section tends to state theorems without proofs, so I think it would be nice if a proof for each theorem was included, but that’s honestly not super important.
I did notice one typo on the five problems that I worked through, but I don’t know how common the typos actually are.
It is a bit weird to me that “challenging” problems are more difficult than “hard” ones, but that is a minor gripe.
Otherwise it’s a great app for finding tough geometry problems to work through, especially for first year geometry students.
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