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equilateral triangle

noun
🔊/ˌiːkwɪˌlætərəl ˈtraɪæŋɡl/
🔊/ˌiːkwɪˌlætərəl ˈtraɪæŋɡl/
(geometry几何)
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  1. a flat shape with three straight sides that are all the same length等边三角形