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 Tangible Object for Studying Right Triangle Trigonometry. In <em>Proceedings of the 35th Brazilian Symposium on Computers in Education</em>, November 04, 2024, Rio de Janeiro/RJ, Brasil. SBC, Porto Alegre, Brasil, 210-222. DOI: <a href="https://doi.org/10.5753/sbie.2024.242340">https://doi.org/10.5753/sbie.2024.242340</a>.