you have successful in answering all the questions in required way as well as I am happy that you have clear understanding about the definition of triangular arbitrage as you have also suppose a b and c , 3 coins and then you implement definition of triangular arbitrage on them

Secondly I am happy to see cryptocurrencies which are very famous that you include for creating a practical example as well as you have also mentioned some of the clear differences among arbitrage and triangular arbitrage
You have explain in a very clear way that both these are very different from each other I wish you good luck and success in this engagement challenge