This math topic focuses on classifying triangles based on their angles. It teaches how to identify triangles as obtuse (one angle more than 90°), acute (all angles less than 90°), and right (one angle equal to 90°). These problems are part of a broader unit on triangle classification in geometry. The format involves presenting information and then asking for the correct term for different types of triangles, with choices provided for each question.
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In geometry, what's the name for a triangle where one of the angles is equal to 90°?